WO2023182126A1 - 表面被覆切削工具 - Google Patents
表面被覆切削工具 Download PDFInfo
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- WO2023182126A1 WO2023182126A1 PCT/JP2023/010248 JP2023010248W WO2023182126A1 WO 2023182126 A1 WO2023182126 A1 WO 2023182126A1 JP 2023010248 W JP2023010248 W JP 2023010248W WO 2023182126 A1 WO2023182126 A1 WO 2023182126A1
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
- C23C30/005—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process on hard metal substrates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
- B23B27/148—Composition of the cutting inserts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/0021—Reactive sputtering or evaporation
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
- C23C14/024—Deposition of sublayers, e.g. to promote adhesion of the coating
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/0617—AIII BV compounds, where A is Al, Ga, In or Tl and B is N, P, As, Sb or Bi
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/0641—Nitrides
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
- C23C14/32—Vacuum evaporation by explosion; by evaporation and subsequent ionisation of the vapours, e.g. ion-plating
- C23C14/325—Electric arc evaporation
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
- C23C28/042—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material including a refractory ceramic layer, e.g. refractory metal oxides, ZrO2, rare earth oxides
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
- C23C28/044—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material coatings specially adapted for cutting tools or wear applications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
- C23C28/048—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material with layers graded in composition or physical properties
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/40—Coatings including alternating layers following a pattern, a periodic or defined repetition
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/40—Coatings including alternating layers following a pattern, a periodic or defined repetition
- C23C28/42—Coatings including alternating layers following a pattern, a periodic or defined repetition characterized by the composition of the alternating layers
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/40—Coatings including alternating layers following a pattern, a periodic or defined repetition
- C23C28/44—Coatings including alternating layers following a pattern, a periodic or defined repetition characterized by a measurable physical property of the alternating layer or system, e.g. thickness, density, hardness
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D9/00—Electrolytic coating other than with metals
- C25D9/04—Electrolytic coating other than with metals with inorganic materials
- C25D9/08—Electrolytic coating other than with metals with inorganic materials by cathodic processes
- C25D9/12—Electrolytic coating other than with metals with inorganic materials by cathodic processes on light metals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/12—Metallic powder containing non-metallic particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2228/00—Properties of materials of tools or workpieces, materials of tools or workpieces applied in a specific manner
- B23B2228/10—Coatings
- B23B2228/105—Coatings with specified thickness
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/005—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides comprising a particular metallic binder
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
Definitions
- the present invention relates to a surface-coated cutting tool (hereinafter sometimes referred to as a coated tool).
- a coated tool This application claims priority based on Japanese Patent Application No. 2022-45633, which is a Japanese patent application filed on March 22, 2022. All contents described in the Japanese patent application are incorporated herein by reference.
- coated tools have been known in which a coating layer is formed on a base material such as tungsten carbide (hereinafter referred to as WC)-based cemented carbide. Proposals have been made to obtain a coated tool with further improved cutting performance by adjusting the composition and layer structure of this coating layer.
- WC tungsten carbide
- Patent Document 1 two types of layers, Ti x Al 1-x N and Ti y Al 1-y N (0 ⁇ x ⁇ 0.5, 0.5 ⁇ y ⁇ 1), are alternately repeated.
- a coated tool is described that has a coating layer formed into a laminate and the overall composition of the laminate is stoichiometrically aluminum-rich, and that the coated tool has excellent wear resistance and chipping resistance. has been done.
- the coating layer includes alternating layers, each of which has a thickness of 2 nm or more and 100 nm or less, and includes one or more first layers and one or more second layers.
- a coated tool is described in which 0.05 ⁇ da ⁇ 0.2 and 0.05 ⁇ be ⁇ 0.2, and the coated tool is said to have improved tool life. .
- a nanobeam diffraction pattern is indexed to the crystal structure of WC, and has an a-layer made of a carbide containing W and Ti, and a mutually laminated layer disposed on the a-layer.
- the a-layer has a thickness of 1 nm or more and 10 nm or less, and the mutual lamination is made of nitrided Al and Ti with an Al content ratio (atomic %) of 50% or more and 70% or less based on the total amount of metal elements.
- a layer B consisting of aluminum or carbonitride and a layer C consisting of a nitride or carbonitride of Al and Ti having an Al content ratio (atomic %) of 70% or more with respect to the total amount of the metal elements are alternately arranged.
- a coated tool is described which has a coating layer in which the difference in Al content ratio (atomic %) between the b layer and the c layer is 10% or more and 30% or less, and the coated tool is made of stainless steel. It is said to have excellent durability when cutting steel.
- Patent Document 4 discloses that the outermost layer of the coating layer is a hexagonal crystal consisting of 60% or more and 80% of Al in atomic percent of only metal components, and 5% or more and 10% or less of Si, with the remainder being Ti.
- a coated tool is described that is a coating composed of a nitride or carbonitride, and the coated tool is said to be durable.
- the present invention has been made in view of the above-mentioned circumstances and the above-mentioned proposals, and it is an object of the present invention to provide a cutting tool that has excellent wear resistance even when used for high-speed cutting of not only steel and cast iron but also stainless steel and the like.
- high-speed cutting refers to cutting in which the cutting speed is 30% or more faster than normal cutting.
- the surface-coated cutting tool includes: It has a base and a coating layer provided on the base,
- the covering layer has a lower layer A and an upper layer B on the lower layer A,
- the average thickness At of the lower layer A is 0.3 ⁇ m or more and 6.0 ⁇ m or less
- the average thickness Bt of the upper layer B is 0.1 ⁇ m or more and 3.0 ⁇ m or less, and 2.0 ⁇ At.
- the lower layer A has an alternating stack of A1 ⁇ layers with an average thickness ⁇ t and A1 ⁇ layers with an average thickness ⁇ t, 0.5nm ⁇ t ⁇ 4.0nm, 0.5nm ⁇ t ⁇ 4.0nm, 0.7 ⁇ t/ ⁇ t ⁇ 1.3
- the composition of the A1 ⁇ layer is Al x Ti 1-x N (x avg , which is the average value of x, is 0.35 ⁇ x avg ⁇ 0.55)
- the composition of the A1 ⁇ layer is Al y Ti 1-y N (the average value of y avg is 0.60 ⁇ y avg ⁇ 0.80), 1.2 ⁇ y avg /x avg
- the composition of the upper layer B is Al a Ti 1-ab Si b N (the average value of a avg and the average value of b avg are respectively 0.35 ⁇ a avg ⁇ 0.60, 0.00 ⁇ b avg ⁇ 0.15).
- the surface-coated cutting tool according to the embodiment may satisfy the following requirements.
- the lower layer A is a lower layer A1 on the side of the base body and a lower layer A2 on the side of the upper layer B,
- the average thickness A1t of the lower layer A1 and the average thickness A2t of the lower layer A2 are 0.1 ⁇ m ⁇ A1t ⁇ 4.5 ⁇ m, 0.2 ⁇ m ⁇ A2t ⁇ 4.0 ⁇ m, and 0.5 ⁇ A1t/A2t ⁇ 3.
- the lower layer A1 is the alternating stack of the A1 ⁇ layer and the A1 ⁇ layer
- the lower layer A2 is an alternate stack of A2 ⁇ layers with an average thickness of ⁇ t and A2 ⁇ layers with an average thickness of ⁇ t, 1.5nm ⁇ t ⁇ 8.0nm, 1.5nm ⁇ t ⁇ 8.0nm, 0.7 ⁇ t/ ⁇ t ⁇ 1.3, 1.0 ⁇ ( ⁇ t+ ⁇ t)/( ⁇ t+ ⁇ t) ⁇ 6.0
- the composition of the A2 ⁇ layer is Al z Ti 1-z N (the average value of z avg is 0.30 ⁇ z avg ⁇ 0.50)
- the composition of the A2 ⁇ layer is Al w Ti 1-w N (w avg , which is the average value of w, is 0.55 ⁇ w avg ⁇ 0.75), 1.2 ⁇ w avg /z avg , In addition, 0.02 ⁇ (x avg ⁇ z avg ) ⁇ 0.30, and 0.02 ⁇ (y avg
- the surface-coated cutting tool exhibits excellent wear resistance even when used for high-speed cutting of stainless steel as well as steel and cast iron.
- FIG. 1 is an example of a schematic diagram of a vertical cross section of a coating layer in a surface-coated cutting tool according to an embodiment of the present invention. It is an example of the schematic diagram of the longitudinal section of the coating layer in the surface coated cutting tool based on other embodiment of this invention.
- the present inventor conducted extensive research on the coating layer in order to obtain a cutting tool that has excellent wear resistance even when used in high-speed cutting of stainless steel and the like while ensuring performance in cutting of steel and cast iron. As a result, the following findings (1) to (3) were obtained.
- the inventors of the present invention found a layer in which AlTiN layers with two types of Al content, each having an average thickness of 0.5 to 4.0 nm, were laminated alternately, and an AlTiN layer containing Si on top of the layer. That is, it has been found that the above object can be achieved by providing an AlTiSiN layer.
- the lower layer is a lower layer A1 on the substrate side and a lower layer A2 above it
- the lower layer A1 is a layer obtained by alternately laminating AlTiN layers having two types of Al contents with the above-mentioned average thickness
- the lower layer A2 is a layer in which AlTiN layers having an average thickness of 1.5 to 8.0 nm and having two types of Al contents are laminated alternately, and the Al contents of the two types of AlTiN layers of the lower layer A1 are different from that of the lower layer A1. It has also been found that the above objective can be achieved more reliably when the Al content is greater than that of the two types of AlTiN layers of A2.
- Coating Layer An example of the layer structure of the coating layer of the coated tool according to the first embodiment of the present invention is as schematically shown in FIG. A(3), and an upper layer B(4) on top of the lower layer A(3).
- the lower layer A (3) is a stack of thin layers each having an average thickness of 0.5 to 4.0 nm, that is, an alternating stack of A1 ⁇ layers (7) and A1 ⁇ layers (8). is preferred.
- the A1 ⁇ layer (7) and the A1 ⁇ layer (8) are also alternately laminated on the white portion of the lower layer A (3).
- the coating layer may include other layers described below.
- the sum of the average thickness of the lower layer A and the average thickness of the upper layer B is 0.4 ⁇ m or more and 9.0 ⁇ m. It is preferable that it is below. The reason for this is that if it is less than 0.4 ⁇ m, it will not be possible to exhibit excellent wear resistance over long-term use, while if it exceeds 9.0 ⁇ m, the crystal grains will tend to become coarser and the chipping resistance will deteriorate. This is because no improvements will be made.
- This average thickness is more preferably 0.8 ⁇ m or more and 6.0 ⁇ m or less.
- the average thickness At of the lower layer A is 0.3 ⁇ m or more and 6.0 ⁇ m or less, and the average thickness Bt of the upper layer B is 0.1 ⁇ m or more, 3 It is preferable that it is .0 ⁇ m or less and that 2.0 ⁇ At/Bt ⁇ 5.0.
- the reason for this is that when the average thickness At of the lower layer A and the average thickness Bt of the upper layer B are within this range, oxidation damage to the coating layer during cutting can be suppressed, and TiAlN in the lower layer A becomes TiN and AlN. This is because wear resistance can be improved by disassembling.
- the average thickness At of the lower layer A is 0.6 ⁇ m or more and 4.0 ⁇ m or less
- the average thickness Bt of the upper layer B is 0.2 ⁇ m or more and 2.0 ⁇ m or less. Further, it is more preferable that 2.3 ⁇ At/Bt ⁇ 3.5.
- the average thickness Bt of the upper layer B thinner than the average thickness At of the lower layer A, decomposition of AlTiN (AlTiN decomposes into TiN and AlN) during cutting of the lower layer A can be avoided.
- the hardness increases and the wear resistance of the coating layer improves.
- the lower layer A is an alternate stack of A1 ⁇ layers and A1 ⁇ layers.
- the average thicknesses ⁇ t and ⁇ t of the A1 ⁇ layer and the A1 ⁇ layer have the following relationship: 0.5nm ⁇ t ⁇ 4.0nm, 0.5nm ⁇ t ⁇ 4.0nm, 0.7 ⁇ t/ ⁇ t ⁇ 1.3 It is preferable to satisfy the following. Further, it is more preferable to satisfy 0.8 nm ⁇ t ⁇ 3.5 nm, 0.8 nm ⁇ t ⁇ 3.5 nm, and 0.8 ⁇ t/ ⁇ t ⁇ 1.2. The reason is that the above objective can be achieved if these average thickness relationships are satisfied.
- the A1 ⁇ layer and the A1 ⁇ layer may be alternately laminated, and the layers on the base side and the tool surface side may be either one.
- composition of A1 ⁇ layer and A2 ⁇ layer is as follows.
- the A1 ⁇ layer is Al x Ti 1-x N (x avg , which is the average value of x, is 0.35 ⁇ x avg ⁇ 0.55)
- the A1 ⁇ layer is Al y Ti 1-y N (average value of y avg is 0.60 ⁇ y avg ⁇ 0.80), It is preferable to satisfy 1.2 ⁇ y avg /x avg .
- the wear resistance is improved.
- AlTiN decomposes into TiN and AlN during cutting.
- AlTiN constituting the lower layer is manufactured so that the ratio of (AlTi) to N is 1:1 according to an example of the manufacturing method described below, but unavoidably (unintentionally) ) There may be cases where the ratio is not 1:1. This also applies to other nitrides described below.
- Upper layer B is composed of Al a Ti 1-ab Si b N (a avg which is the average value of a and b avg which is the average value of b are 0, respectively) .35 ⁇ a avg ⁇ 0.60, 0.00 ⁇ b avg ⁇ 0.15). If the composition of the upper layer B is within the above range, the oxidation resistance and abrasion resistance can be improved, but if it is outside this range, the oxidation resistance and abrasion resistance will decrease. The reason for this is presumed to be that an AlN phase with a hexagonal crystal structure is precipitated.
- Layers that may be intentionally formed include the outermost layer and underlayer described below.
- An outermost layer may be selectively provided on top layer B.
- a TiN layer (the atomic ratio of Ti and N in the TiN layer is not limited to a stoichiometric one) may be provided.
- this TiN layer since the TiN layer itself has a golden yellow tone, it can be used as an identification layer to distinguish whether a coated tool is unused or used, for example, by the change in color tone. can do.
- the average layer thickness of the TiN layer serving as the identification layer may be, for example, 0.1 to 1.0 ⁇ m.
- Base layer A base layer may be selectively provided between the lower layer A and the substrate.
- the underlayer include a Ti compound layer such as a TiC layer, a TiN layer, a TiCN layer, a TiCNO layer, and an AlTiN layer, and the average thickness thereof can be exemplified as 0.1 to 2.0 ⁇ m. When the average thickness is within this range, the adhesion between the lower layer A and the substrate may be further improved.
- the underlying layer, the lower layer A (A1 ⁇ layer and A1 ⁇ layer), the upper layer B, and the layers other than the outermost layer are formed so that they are not present, that is, these layers are in contact with each other.
- changes in pressure or temperature within the deposition apparatus may occur unintentionally, resulting in the formation of an unintended layer different from these layers.
- the substrate used in this embodiment may be any conventionally known substrate material as long as it does not impede achieving the above-mentioned objective.
- WC-based cemented carbide (contains Co in addition to WC, and also includes carbides or carbonitrides such as Ti, Ta, Nb, etc.), cermets (TiC, TiN, TiCN), It is preferable to use one of ceramics (titanium carbide, silicon carbide, silicon nitride, aluminum nitride, aluminum oxide), cBN sintered body, or diamond sintered body.
- Shape There are no particular restrictions on the shape of the base as long as it can be used as a cutting tool, and examples include the shape of an insert and the shape of a drill.
- Second Embodiment A second embodiment will be described. Descriptions that overlap with the description of the first embodiment will be omitted.
- Coating Layer An example of the layer structure of the coating layer of the coated tool according to the second embodiment is as schematically shown in FIG. ), and has an upper layer B (4) on top of this lower layer A (3).
- the lower layer A(3) the lower layer A1(5) and the lower layer A2(6) are laminated.
- the lower layer A1 (5) is the same as in the first embodiment, and the lower layer A2 (6) is an alternating stack of thin layers with an average thickness of 1.5 to 8.0 nm, respectively; That is, it is preferable that the lower layer A1 (5) is an alternate stack of an A1 ⁇ layer (7) and an A1 ⁇ layer (8), and the lower layer A2 (6) is an alternate stack of an A2 ⁇ layer (9) and an A2 ⁇ layer (10). .
- the white parts of the lower layer A1 (5) and the lower layer A2 (6) also have A1 ⁇ layer (7), A1 ⁇ layer (8), A2 ⁇ layer (9), and A2 ⁇ layer (10), respectively. ) are stacked alternately.
- the coating layer may include other layers described below in addition to these layers.
- the average thickness of the lower layer A and the upper layer B has the same thickness range as in the first embodiment. preferred (the more preferred thickness range is also the same).
- the lower layer A is a lower layer A1 and a lower layer A2.
- the average thickness A1t of the lower layer A1 and the average thickness A2t of the lower layer A2 are 0.1 ⁇ m ⁇ A1t ⁇ 4.5 ⁇ m, 0.2 ⁇ m ⁇ A2t ⁇ 4.0 ⁇ m, and 0.5 ⁇ A1t/A2t ⁇ Preferably it is 3.0. When this relationship is satisfied, the aforementioned objective is achieved. Below, the lower layer A1 and the lower layer A2 will be explained in detail.
- the lower layer A1 is the same as the lower layer A of the first embodiment, which is an alternate stack of A1 ⁇ layers and A2 ⁇ layers, and has the average thickness and the relational expression of the average thickness described in the description of the first embodiment, and preferably satisfies the relationship between composition and composition.
- the lower layer A2 is an alternate stack of A2 ⁇ layers and A2 ⁇ layers.
- the average thicknesses of the A2 ⁇ layer and A2 ⁇ layer, ⁇ t and ⁇ t have the following relationship: 1.5nm ⁇ t ⁇ 8.0nm, 1.5nm ⁇ t ⁇ 8.0nm, 0.7 ⁇ t/ ⁇ t ⁇ 1.3 and for the average thickness of each of the A1 ⁇ layer and A2 ⁇ layer constituting the lower layer A1, 1.0 ⁇ ( ⁇ t+ ⁇ t)/( ⁇ t+ ⁇ t) ⁇ 6.0 It is preferable to satisfy the following. The reason is that if this relational expression is satisfied, the above-mentioned objective is achieved. ( ⁇ t+ ⁇ t)/( ⁇ t+ ⁇ t) is more preferably 1.2 ⁇ ( ⁇ t+ ⁇ t)/( ⁇ t+ ⁇ t) ⁇ 3.0.
- composition of A2 ⁇ layer and A2 ⁇ layer The composition of the A2 ⁇ layer is Al z Ti 1-z N (z avg , which is the average value of z, is 0.30 ⁇ z avg ⁇ 0.50), The composition of the A2 ⁇ layer is Al w Ti 1-w N (w avg , which is the average value of w, is 0.55 ⁇ w avg ⁇ 0.75), It is preferable to satisfy 1.2 ⁇ w avg /z avg .
- compositions of the A1 ⁇ layer and A2 ⁇ layer and the compositions of the A2 ⁇ layer and A2 ⁇ layer are as follows: 0.02 ⁇ (x avg -z avg ) ⁇ 0.30, 0.02 ⁇ (y avg -w avg ) ⁇ 0.30 It is preferable to satisfy the following.
- Average thickness and number of laminated layers of A1 ⁇ layer, A1 ⁇ layer, A2 ⁇ layer, and A2 ⁇ layer The average thickness of A1 ⁇ layer and A1 ⁇ layer that constitute lower layer A1 and lower layer A2, respectively, is 0.5 to 4.0 nm. , the average thickness of the A2 ⁇ layer and the A2 ⁇ layer is preferably 1.5 to 8.0 nm.
- the number p of laminated A1 ⁇ layers and the number q of laminated A1 ⁇ layers in the lower layer A1, the number r of laminated A2 ⁇ layers and the number s of laminated A2 ⁇ layers in the lower layer A2 are
- the A1 ⁇ layer and the A1 ⁇ layer, and the A2 ⁇ layer and the A2 ⁇ layer may be alternately laminated, respectively, and the layers on the base side and the tool surface side may be either one.
- lower layer A (A1 ⁇ layer and A1 ⁇ layer) is replaced by lower layer A1 (A1 ⁇ layer and A1 ⁇ layer), lower layer A2 ( A2 ⁇ layer and A2 ⁇ layer).
- Base The material and shape of the base may be the same as in the first embodiment.
- Measurement method 1 Average composition and average thickness of lower layer A, upper layer B, and other layers Average thickness of lower layer A, lower layer A1, lower layer A2, upper layer B, and other layers constituting the coating layer
- SEM scanning electron microscopes
- TEM transmission electron microscopes
- EDS Longitudinal section using Spectrometer
- Each layer can be determined by observing the surface (in the case of inserts, the microscopic irregularities on the base surface are ignored and treated as a flat surface, the cross section perpendicular to this surface; in the case of a shaft tool such as a drill, the cross section perpendicular to the axis). It is possible to determine the average thickness by distinguishing between them.
- the average content ratio of each component in each layer was determined by analyzing five TEM-EDS lines in the thickness direction.
- the surface of the substrate is determined by observing this longitudinal section, determining the interface between the substrate and the lower layer A (or lower layer A1) by elemental mapping, and using the average straight line for the roughness curve of the interface thus obtained. is calculated arithmetically and this is taken as the surface of the substrate.
- a line scan of a length including at least 10 layers, preferably 50 or more layers of these layers is performed in the thickness direction of the coating layer, and the adjacent Ti
- the average value of the maximum value and the minimum value of the intensity of the EDS spectrum is calculated.
- the position on the line segment where the line scan was performed to give the average value of the calculated maximum and minimum values of adjacent intensities is determined.
- the distance between the positions that include one local maximum value and give the adjacent average value, and the distance between the positions that include one local minimum value and give the adjacent average value become the thickness of each layer, and these are averaged to calculate the average thickness.
- the coating layer of the coated tool of the first and second embodiments can be manufactured using, for example, an AIP device (arc ion plating device). Further, as the target, an AiTi target with a composition corresponding to the composition of the lower layer A, the lower layer A1, and the lower layer A2, respectively, and an AlTiSi target with a composition corresponding to the composition of the upper layer B as a target for forming the upper layer B.
- a film can be formed by using each target.
- a surface-coated cutting tool having a base body and a coating layer provided on the base body,
- the covering layer has a lower layer A and an upper layer B on the lower layer A,
- the average thickness At of the lower layer A is 0.3 ⁇ m or more and 6.0 ⁇ m or less
- the average thickness Bt of the upper layer B is 0.1 ⁇ m or more and 3.0 ⁇ m or less, and 2.0 ⁇ At.
- the lower layer A has an alternating stack of A1 ⁇ layers with an average thickness ⁇ t and A1 ⁇ layers with an average thickness ⁇ t, 0.5nm ⁇ t ⁇ 4.0nm, 0.5nm ⁇ t ⁇ 4.0nm, 0.7 ⁇ t/ ⁇ t ⁇ 1.3
- the composition of the A1 ⁇ layer is Al x Ti 1-x N (x avg , which is the average value of x, is 0.35 ⁇ x avg ⁇ 0.55)
- the composition of the A1 ⁇ layer is Al y Ti 1-y N (the average value of y avg is 0.60 ⁇ y avg ⁇ 0.80), 1.2 ⁇ y avg /x avg
- the composition of the upper layer B is Al a Ti 1-ab Si b N (the average value of a avg and the average value of b avg are respectively 0.35 ⁇ a avg ⁇ 0.60, 0.00 ⁇ b avg ⁇ 0.15).
- the lower layer A is a lower layer A1 on the side of the base body and a lower layer A2 on the side of the upper layer B,
- the average thickness A1t of the lower layer A1 and the average thickness A2t of the lower layer A2 are 0.1 ⁇ m ⁇ A1t ⁇ 4.5 ⁇ m, 0.2 ⁇ m ⁇ A2t ⁇ 4.0 ⁇ m, and 0.5 ⁇ A1t/A2t ⁇ 3.
- the lower layer A1 is the alternating stack of the A1 ⁇ layer and the A1 ⁇ layer
- the lower layer A2 is an alternate stack of A2 ⁇ layers with an average thickness of ⁇ t and A2 ⁇ layers with an average thickness of ⁇ t, 1.5nm ⁇ t ⁇ 8.0nm, 1.5nm ⁇ t ⁇ 8.0nm, 0.7 ⁇ t/ ⁇ t ⁇ 1.3, 1.0 ⁇ ( ⁇ t+ ⁇ t)/( ⁇ t+ ⁇ t) ⁇ 6.0
- the composition of the A2 ⁇ layer is Al z Ti 1-z N (the average value of z avg is 0.30 ⁇ z avg ⁇ 0.50)
- the composition of the A2 ⁇ layer is Al w Ti 1-w N (w avg , which is the average value of w, is 0.55 ⁇ w avg ⁇ 0.75), 1.2 ⁇ w avg /z avg ,
- the coated tool of the present invention an insert-shaped coated tool whose base body is made of WC-based cemented carbide will be described, but the base body may be made of any of the above-mentioned materials. The same applies even if the shape is a drill, an end mill, etc.
- Co powder, TiC powder, VC powder, TaC powder, NbC powder, Cr3C2 powder, and WC powder were prepared as raw material powders, and these raw material powders were blended in the proportions shown in Table 1.
- Wax was added, wet-mixed for 72 hours in a ball mill, dried under reduced pressure, and then press-molded at a pressure of 100 MPa.
- These compacted compacts were sintered by holding them at 1400°C for 1 hour in a vacuum atmosphere of 6 Pa, and processed to the specified dimensions to produce a WC-based cemented carbide having an insert shape of ANSI standard SEEN42AFTN1.
- Substrates 1 to 3 were prepared.
- substrates 1 to 3 were ultrasonically cleaned in acetone and dried. Then, in order to form a coating layer using an AIP device, the substrates 1 to 3 were mounted along the outer periphery at a predetermined distance in the radial direction from the central axis on a rotary table in the device. Further, a target of a predetermined composition was placed as a cathode electrode (evaporation source).
- the inside of the AIP device was evacuated and maintained at a vacuum of 0.1 Pa or less, the inside of the device was heated to 600°C with a heater, and then a DC bias voltage of -1000V was applied to the substrate rotating on the rotary table. A current of 100 A was passed between the cathode electrode and the anode electrode to bombard the surface of the substrate.
- the reactant gas in the AIP apparatus was a nitrogen atmosphere with a partial pressure of 2.6 to 7.5 Pa as shown in Table 2, and the temperature inside the furnace was maintained as shown in Table 2. Then, a DC voltage of -40 to -125V shown in Table 2 is applied to the substrate rotating on the rotary table, and a voltage between the AlTi alloy electrode for forming the lower layer A (A1 ⁇ layer, A1 ⁇ layer) and the anode electrode is applied. A current of 125 to 210 A was applied to generate an arc discharge to form an A1 ⁇ layer and an A1 ⁇ layer of a predetermined thickness.
- a DC voltage of -40 to -120V shown in Table 2 was applied to the substrate in a nitrogen atmosphere with a partial pressure of 0.4 to 0.6 Pa shown in Table 2, and the AiTiSi alloy for forming the upper layer B was formed.
- a current of 120 to 220 A was passed between the anode electrode to generate arc discharge to form the upper layer B of a predetermined thickness, and coated tools of Examples 1 to 9 (hereinafter referred to as Examples) were obtained. .
- the reactant gas in the AIP apparatus was a nitrogen atmosphere with a partial pressure of 1.0 to 8.2 Pa as shown in Table 4, and the furnace temperature was maintained as shown in Table 4. Then, a DC voltage of -30 to -120V shown in Table 2 is applied to the substrate rotating on the rotary table, and a voltage between the AlTi alloy electrode for forming the lower layer A1 (A1 ⁇ layer, A1 ⁇ layer) and the anode electrode is applied. A current of 100 to 230 A was applied to generate an arc discharge to form an A1 ⁇ layer and an A1 ⁇ layer of a predetermined thickness.
- a DC voltage of -60 to -135 V was applied to form an AlTi alloy electrode for forming the lower layer A2 (A2 ⁇ layer, A2 ⁇ layer).
- a current of 115 to 250 A was passed between the electrode and the anode electrode to generate an arc discharge to form an A2 ⁇ layer and an A2 ⁇ layer of a predetermined thickness.
- a nitrogen atmosphere with a partial pressure of 0.5 to 9.0 Pa is used as a reaction gas in the AIP apparatus, and the furnace temperature is set to 300 Pa. The temperature was maintained at ⁇ 600°C. Then, a DC voltage of -20 to -500 V is applied to the substrate rotating on the rotary table, and a current of 50 to 250 A is passed between the Ti electrode for forming the outermost layer and the anode electrode to generate an arc discharge. In this way, a TiN layer, which is the outermost layer, having a predetermined thickness was formed (the conditions for forming the outermost layer are shown in Table 6). These examples are shown in Tables 7 and 8.
- a comparative example corresponding to the first embodiment was prepared under the conditions shown in Table 3.
- coating layers were formed by vapor deposition under the conditions shown in Table 5, and coated tools 1 to 9 and 11 to 19 of comparative examples shown in Tables 7 and 8 (hereinafter referred to as "comparative examples") were produced.
- a TiN layer as the outermost layer was formed as in the example.
- the average thickness of the coating layer and the average composition of the coating layer are based on the longitudinal section of the coating layer perpendicular to the surface of the substrate of Examples 1 to 9, 11 to 19 and Comparative Examples 1 to 9, 11 to 19 prepared above. , a scanning electron microscope (SEM), a transmission electron microscope (TEM), an energy dispersive type It was determined by cross-sectional observation using an X-ray spectrometer (EDS).
- SEM scanning electron microscope
- TEM transmission electron microscope
- EDS X-ray spectrometer
- the average thickness of the lower layer A and the upper layer B was calculated by enlarging the vertical cross section, which is the observed cross section, 5000 times, and determining the film thickness at 5 points.
- the average thickness of the lower layer A and the upper layer B was 1 ⁇ m or less, the observed longitudinal section was magnified 10,000 times, and the film thicknesses at 5 points were determined to calculate the average thickness.
- the average thickness of each layer constituting the alternate lamination and the average content of each component in each layer were measured by the method described above.
- Cutting test 1 Cutting conditions: Work material: Block material of width 60mm x length 200mm (made of SUS304) Cutting speed: 160 m/min. Cut: 1.5 mm Feed: 0.10 mm/tooth. Cutting was carried out to a cutting length of 2.0 m, the flank wear width was measured, and the state of wear on the cutting edge was observed. The flank wear width includes the wear width due to oxidation damage and boundary damage, so it can be evaluated whether oxidation damage and boundary damage were suppressed. Tables 9 and 10 show the results of the cutting tests.
- Cutting test 2 Cutting conditions: Work material: Block material of width 60mm x length 200mm (made of FC ⁇ 450) Cutting speed: 180 m/min. Cut: 1.2 mm Feed: 0.10 mm/tooth. Cutting was carried out to a cutting length of 10.0 m, the flank wear width was measured, and the state of wear on the cutting edge was observed. The results of the cutting test are shown in Tables 11 and 12.
- Cutting test 3 Cutting conditions: Work material: Block material of width 60mm x length 200mm (made of SNCM435) Cutting speed: 200 m/min. Cut: 1.2 mm Feed: 0.10 mm/tooth. Cutting was carried out to a cutting length of 10.0 m, the flank wear width was measured, and the state of wear on the cutting edge was observed. The results of the cutting test are shown in Tables 13 and 14.
- Examples 1 to 9 and 11 to 19 did not cause any abnormal damage such as chipping or peeling, and were excellent in both wear resistance and chipping resistance. I understand that. On the other hand, it is clear that in Comparative Examples 1 to 9 and 11 to 19, the life span was reached in a short period of time due to occurrence of chipping or progression of flank wear.
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Abstract
Description
そして、この被覆層の組成、層構造を調整することによって、切削性能がより一層向上した被覆工具を得る提案がなされている
ここで、高速切削加工とは、通常の切削加工に比して、切削加工速度が30%以上速い切削加工をいう。
基体と該基体に設けられた被覆層を有し、
前記被覆層は、下部層Aと該下部層A上の上部層Bを有し、
前記下部層Aの平均厚さAtは0.3μm以上、6.0μm以下であり、前記上部層Bの平均厚さBtは0.1μm以上、3.0μm以下であって、2.0≦At/Bt≦5.0であり、
前記下部層Aは、平均厚さαtのA1α層と平均厚さβtのA1β層の交互積層を有し、
0.5nm≦αt≦4.0nm、0.5nm≦βt≦4.0nm、0.7≦βt/αt≦1.3であり、
前記A1α層の組成は、AlxTi1-xN(xの平均値であるxavgが、0.35≦xavg≦0.55)、
前記A1β層の組成は、AlyTi1-yN(yの平均値であるyavgが、0.60≦yavg≦0.80)であって、
1.2≦yavg/xavgを満足し、
前記上部層Bの組成は、AlaTi1-a-bSibN(aの平均値であるaavg、bの平均値であるbavgが、ぞれぞれ、0.35≦aavg≦0.60、0.00<bavg≦0.15)である。
前記下部層A1の平均厚さA1tと前記下部層A2の平均厚さA2tは、0.1μm≦A1t≦4.5μm、0.2μm≦A2t≦4.0μm、0.5≦A1t/A2t≦3.0であり、
前記下部層A1は、前記A1α層と前記A1β層の前記交互積層であり、
前記下部層A2は、平均厚さγtのA2γ層と平均厚さδtのA2δ層の交互積層であり、
1.5nm≦γt≦8.0nm、1.5nm≦δt≦8.0nm、0.7≦δt/γt≦1.3であって、
1.0<(γt+δt)/(αt+βt)≦6.0であり、
前記A2γ層の組成は、AlzTi1-zN(zの平均値であるzavgが、0.30≦zavg≦0.50)、
前記A2δ層の組成は、AlwTi1-wN(wの平均値であるwavgが、0.55≦wavg≦0.75)であって、
1.2≦wavg/zavgを満足し、
かつ、0.02≦(xavg-zavg)≦0.30、0.02≦(yavg-wavg)≦0.30であること。
以下、第1の実施形態に係る被覆工具について説明する。
本発明の第1の実施形態に係る被覆工具の被覆層の層構造はその一例を図1に模式的に示すとおりであり、被覆層(2)は、基体(1)上に下部層A(3)を有し、この下部層A(3)の上部に上部層B(4)を有している。図1おいて、下部層A(3)は、それぞれ0.5~4.0nmの平均厚さを有する薄い層の積層、すなわち、A1α層(7)とA1β層(8)交互積層であることが好ましい。なお、図1において、下部層A(3)の白地の部分にも、A1α層(7)とA1β層(8)が交互積層されている。
なお、被覆層はこれらの層に加えて、後述するその他の層を有していてもよい。
本実施形態における、下部層Aの平均厚さと上部層Bの平均厚さの和は、0.4μm以上、9.0μm以下であることが好ましい。その理由は、0.4μm未満であると、長期の使用にわたって優れた耐摩耗性を発揮することができず、一方、9.0μmを超えると、結晶粒が粗大化しやすくなり、耐チッピング性の向上が得られなくなるからである。この平均厚さは、0.8μm以上、6.0μm以下がより好ましい。
下部層Aの平均厚さAtは0.3μm以上、6.0μm以下、上部層Bの平均厚さBtは0.1μm以上、3.0μm以下であり、かつ、2.0≦At/Bt≦5.0であることが好ましい。その理由は、下部層Aの平均厚さAtと上部層Bの平均厚さBtがこの範囲にあると、切削時の被覆層の酸化損傷を抑制し、下部層AにおいてTiAlNがTiNとAlNに分解することによる耐摩耗性向上が可能となるためである。
下部層Aの平均厚さAtは0.6μm以上、4.0μm以下、上部層Bの平均厚さBtは0.2μm以上、2.0μm以下がより好ましい。また、2.3≦At/Bt≦3.5であることがより好ましい。
下部層Aは、A1α層とA1β層との交互積層である。そして、A1α層とA1β層のそれぞれの平均厚さであるαt、βtは、以下の関係、すなわち、
0.5nm≦αt≦4.0nm、0.5nm≦βt≦4.0nm、0.7≦βt/αt≦1.3
を満足することが好ましい。また、0.8nm≦αt≦3.5nm、0.8nm≦βt≦3.5nm、0.8≦βt/αt≦1.2を満足することがより好ましい。
その理由は、これらの平均厚さの関係を満足すると、前記目的が達成できるためである。
A1α層の積層数をmとA1β層の積層数をnとすると、|m-n|≦1であり、m+nは特に制約はないが、50~2001が好ましい。その理由は、50未満では切削加工時に発生するクラック進展を十分に防止することができないために耐欠損性が低下することがあり、2001を超えると繰返し数が増えることより、下部層Aの結晶粒が微粒化し耐摩耗性が低下してしまうことがあるためである。m+nは、100~1001がより好ましい。
下部層を構成するA1α層とA2α層の組成は、
A1α層が、AlxTi1-xN(xの平均値であるxavgが、0.35≦xavg≦0.55)であり、
A1β層が、AlyTi1-yN(yの平均値であるyavgが0.60≦yavg≦0.80)であって、
1.2≦yavg/xavgを満足することが好ましい。
上部層Bは、AlaTi1-a-bSibN(aの平均値であるaavg、bの平均値であるbavgが、ぞれぞれ、0.35≦aavg≦0.60、0.00<bavg≦0.15)であることが好ましい。
上部層Bの組成が前記範囲であれば、耐酸化性、耐摩耗性を向上させることができるが、この範囲外になると耐酸化性、耐摩耗性が低下してしまう。その理由は、六方晶構造のAlN相が析出するためと推定される。
(5-1)意図的に成膜してもよい層
意図的に成膜してもよい層として、以下に述べる最外層と下地層をあげることができる。
上部層Bの上に最外層を選択的に設けてもよい。
最外層としては、例えば、TiN層(TiN層のTiとNの原子比は化学量論的なものに限定されない)を設けてもよい。このTiN層を設けた場合には、TiN層自体が黄金色の色調を有することから、例えば、被覆工具が未使用であるか使用したものであるかを色調変化によって、判別する識別層として活用することができる。なお、この識別層としてのTiN層の平均層厚は、例えば、0.1~1.0μmでよい。
下部層Aと基体との間に下地層を選択的に設けてもよい。
下地層としては、TiC層、TiN層、TiCN層、TiCNO層のTi化合物層およびAlTiN層が例示でき、その平均厚さは、0.1~2.0μmが例示できる。平均厚さがこの範囲にあると、下部層Aと基体との密着性がより一層向上する場合がある。
本実施形態では、下地層、下部層A(A1α層とA1β層)、上部層B、および、最外層以外の層は存在しないように、すなわち、これらの層は接するように成膜される。しかし、成膜すべき層の種類を変更する際に、成膜装置内の圧力や温度の変化が意図せずに発生し、これらの層とは異なる意図しない層が形成されることがある。
(1)材質
本実施形態に使用する基体は、従来公知の基体の材質であれば、前述の目的を達成することを阻害するものでない限り、いずれのものも使用可能である。一例をあげるならば、WC基超硬合金(WCの他、Coを含み、さらに、Ti、Ta、Nb等の炭化物または炭窒化物を添加したものも含むもの)、サーメット(TiC、TiN、TiCN等を主成分とするもの)、セラミックス(炭化チタン、炭化珪素、窒化珪素、窒化アルミニウム、酸化アルミニウム)、cBN焼結体、またはダイヤモンド焼結体のいずれかであることが好ましい。
基体の形状は、切削工具として用いられる形状であれば特段の制約はなく、インサートの形状、ドリルの形状が例示できる。
第2の実施形態について説明する。第1の実施形態の説明と重複する個所の記載は省略する。
第2の実施形態に係る被覆工具の被覆層の層構造はその一例を図2に模式的に示すとおりであり、被覆層(2)は、基体(1)上に下部層A(3)を有し、この下部層A(3)の上部に上部層B(4)を有している。下部層A(3)では、下部層A1(5)と下部層A2(6)が積層されている。図2おいて、下部層A1(5)は第1の実施形態と同じであり、下部層A2(6)はそれぞれ、1.5~8.0nmの平均厚さを有する薄い層の交互積層、すなわち、それぞれ、下部層A1(5)はA1α層(7)とA1β層(8)、下部層A2(6)はA2γ層(9)とA2δ層(10)との交互積層であることが好ましい。なお、図2において、下部層A1(5)および下部層A2(6)の白地の部分にも、それぞれ、A1α層(7)とA1β層(8)、A2γ層(9)とA2δ層(10)がそれぞれ交互積層されている。
なお、第1の実施形態と同様に被覆層はこれらの層に加えて、後述するその他の層を有していてもよい。
第2の実施形態においても、下部層Aの平均厚さと上部層Bの平均厚さの和は、第1の実施形態と同じ厚さ範囲が好ましい(より好ましい厚さ範囲も同じである)。
第2の実施形態においても、下部層Aと上部層Bのそれぞれの平均厚さは第1の実施形態と同じ厚さ範囲が好ましい(より好ましい厚さ範囲も同じである)。
第2の実施形態では、下部層Aは下部層A1と下部層A2である。下部層A1の平均厚さA1tと下部層A2の平均厚さA2tは、0.1μm≦A1t≦4.5μm、0.2μm≦A2t≦4.0μmであって、0.5≦A1t/A2t≦3.0であることが好ましい。この関係を満たすとき、前述の目的が達成される。
以下、下部層A1と下部層A2について詳細に説明する。
下部層A1は、第1の実施形態の下部層Aと同じA1α層とA2α層との交互積層であり、第1の実施形態の説明で述べた平均厚さ、平均厚さの関係式、さらには、組成、組成の関係式を満足することが好ましい。
下部層A2は、A2γ層とA2δ層との交互積層である。A2γ層とA2δ層のそれぞれの平均厚さであるγt、δtは、以下の関係、すなわち、
1.5nm≦γt≦8.0nm、1.5nm≦δt≦8.0nm、0.7≦δt/γt≦1.3
を満足し、かつ、下部層A1を構成するA1α層とA2α層のそれぞれの平均厚さに対して、
1.0<(γt+δt)/(αt+βt)≦6.0
を満足することが好ましい。
その理由は、この関係式を満足すると、前述の目的が達成されるためである。(γt+δt)/(αt+βt)は、1.2≦(γt+δt)/(αt+βt)≦3.0であることがより好ましい。
A2γ層の組成は、AlzTi1-zN(zの平均値であるzavgが、0.30≦zavg≦0.50)であり、
前記A2δ層の組成は、AlwTi1-wN(wの平均値であるwavgが、0.55≦wavg≦0.75)であって、
1.2≦wavg/zavgを満足することが好ましい。
また、A1α層とA2α層の組成およびA2γ層とA2δ層の組成は、
0.02≦(xavg-zavg)≦0.30、0.02≦(yavg-wavg)≦0.30
を満足することが好ましい。
下部層A1と下部層A2をそれぞれ構成するA1α層およびA1β層の平均厚さは0.5~4.0nm、A2γ層およびA2δ層の平均厚さは1.5~8.0nmが好ましい。下部層A1におけるA1α層の積層数pとA1β層の積層数q、下部層A2におけるA2γ層の積層数rとA2δ層の積層数sは、|p-q|≦1、|r-s|≦1であって、p+qおよびr+sは特に制約はないが、、p+qは50~901、r+sは20~551が好ましい。その理由は、p+qが50およびr+sが20未満では切削加工時に発生するクラック進展を十分に防止することができないために耐欠損性が低下することがあり、一方、p+qが901およびr+sが551を超えると繰返し数が増えることより、下部層Aの結晶粒が微粒化し耐摩耗性が低下してしまうことがあるためである。p+qは100~451、r+sは50~180がより好ましい。
上部層については、第1の実施形態の説明と同じである。
最外層および下地層については、第1の実施形態の説明と同じである。
意図せずに成膜されてしまう層(不可避的に生じる可能性のある層)については、下部層A(A1α層とA1β層)を下部層A1(A1α層とA1β層)、下部層A2(A2γ層とA2δ層)と読み替えたものと同じである。
基体の材質、形状は、第1の実施形態と同じでよい。
1.下部層A、上部層B、および、その他の層の平均組成および平均厚さ
被覆層を構成する下部層A、下部層A1、下部層A2、上部層B、および、その他の層の平均厚さについては、走査型電子顕微鏡(Scanning Electron Microscope:SEM)、透過型電子顕微鏡(Transmission Electron Microscope:TEM)に付属するエネルギー分散型X線分光器(Energy Dispersive X-ray Spectrometer:EDS)を用いた縦断面(インサートのとき、基体表面の微少な凹凸を無視し平坦な面として扱ったとき、この面に垂直な断面。ドリルのような軸物工具のときは軸に垂直な断面)の観察により各層を鑑別してその平均厚さを求めることができる。各層の各成分平均含有割合については、厚さ方向に5本 のTEM-EDS線分析を行って求めた。
被覆層の厚さ方向に、これら層が少なくとも10層、好ましくは50層以上含まれる長さのラインスキャンを行い、隣り合うTiのEDSスペクトルの強度の極大値と極小値の平均値をそれぞれ算出する。算出した隣り合う強度の極大値と極小値の平均値を与えるラインスキャンを行った線分上の位置を求める。そして、一つの極大値を含み隣り合う平均値を与える位置間の距離および一つの極小値を含み隣り合う平均値を与える位置間の距離が各層の厚みとなり、これを平均して平均厚さを得ることができる。
第1および第2の実施形態の被覆工具の被覆層は、例えば、AIP装置(アークイオンプレーティング装置)を用いて製造することができる。また、そのターゲットとして、下部層A、下部層A1および下部層A2の組成にそれぞれ対応した組成のAiTiターゲットを、上部層Bの成膜用ターゲットとして、上部層Bの組成に対応した組成のAlTiSiターゲットを、それぞれ用いることにより成膜することができる。
(付記1)
基体と該基体に設けられた被覆層を有する表面被覆切削工具であって、
前記被覆層は、下部層Aと該下部層A上の上部層Bを有し、
前記下部層Aの平均厚さAtは0.3μm以上、6.0μm以下であり、前記上部層Bの平均厚さBtは0.1μm以上、3.0μm以下であって、2.0≦At/Bt≦5.0であり、
前記下部層Aは、平均厚さαtのA1α層と平均厚さβtのA1β層の交互積層を有し、
0.5nm≦αt≦4.0nm、0.5nm≦βt≦4.0nm、0.7≦βt/αt≦1.3であり、
前記A1α層の組成は、AlxTi1-xN(xの平均値であるxavgが、0.35≦xavg≦0.55)、
前記A1β層の組成は、AlyTi1-yN(yの平均値であるyavgが、0.60≦yavg≦0.80)であって、
1.2≦yavg/xavgを満足し、
前記上部層Bの組成は、AlaTi1-a-bSibN(aの平均値であるaavg、bの平均値であるbavgが、ぞれぞれ、0.35≦aavg≦0.60、0.00<bavg≦0.15)である
ことを特徴とする表面被覆切削工具。
(付記2)
前記下部層Aは前記基体の側の下部層A1と前記上部層Bの側の下部層A2であり、
前記下部層A1の平均厚さA1tと前記下部層A2の平均厚さA2tは、0.1μm≦A1t≦4.5μm、0.2μm≦A2t≦4.0μm、0.5≦A1t/A2t≦3.0であり、
前記下部層A1は、前記A1α層と前記A1β層の前記交互積層であり、
前記下部層A2は、平均厚さγtのA2γ層と平均厚さδtのA2δ層の交互積層であり、
1.5nm≦γt≦8.0nm、1.5nm≦δt≦8.0nm、0.7≦δt/γt≦1.3であって、
1.0<(γt+δt)/(αt+βt)≦6.0であり、
前記A2γ層の組成は、AlzTi1-zN(zの平均値であるzavgが、0.30≦zavg≦0.50)、
前記A2δ層の組成は、AlwTi1-wN(wの平均値であるwavgが、0.55≦wavg≦0.75)であって、
1.2≦wavg/zavgを満足し、
かつ、0.02≦(xavg-zavg)≦0.30、0.02≦(yavg-wavg)≦0.30である
ことを特徴とする付記1に記載の表面被覆切削工具。
(付記3)
前記上部層Bの上に最外層を有することを特徴とする付記1または2記載の表面被覆切削工具。
(付記4)
前記下部層Aと前記基体との間に下地層を有することを特徴とする付記1~3のいずれかに記載の表面被覆切削工具。
ここでは、本発明の被覆工具の実施例として、基体がWC基超硬合金であってインサート形状の被覆工具について述べるが、基体は前述の材質のものがいずれも使用でき、また、前述のとおり形状としてドリル、エンドミル等であっても同様である。
AIP装置内に反応ガスとして、表2に示す分圧が2.6~7.5Paの窒素雰囲気とし、同じく表2に示す炉内温度に維持した。そして、前記回転テーブル上で自転する基体に、表2に示す-40~-125Vの直流電圧を印加し、下部層A(A1α層、A1β層)形成用のAlTi合金電極とアノード電極との間に125~210Aの電流を流してアーク放電を発生させて所定厚さのA1α層、A1β層を形成した。
AIP装置内に反応ガスとして、表4に示す分圧が1.0~8.2Paの窒素雰囲気とし、同じく表4に示す炉内温度に維持した。そして、前記回転テーブル上で自転する基体に、表2に示す-30~-120Vの直流電圧を印加し、下部層A1(A1α層、A1β層)形成用のAlTi合金電極とアノード電極との間に100~230Aの電流を流してアーク放電を発生させて所定厚さのA1α層、A1β層を形成した。
なお、第1の実施形態および第2の実施形態に対応するいくつかの比較例では、実施例と同様に最外層であるTiN層を成膜した。
切削条件:
被削材:幅60mm×長さ200mmのブロック材(SUS304製)
切削速度: 160 m/min.
切り込み: 1.5 mm
送り: 0.10 mm/tooth.
切削長2.0mまで切削し、逃げ面摩耗幅を測定し、刃先の損耗状態を観察した。逃げ面摩耗幅には酸化損傷、境界損傷による摩耗幅も含むため、酸化損傷、境界損傷が抑制されたかも評価できる
切削試験の結果を表9、10に示す。
切削条件:
被削材:幅60mm×長さ200mmのブロック材(FC■450製)
切削速度: 180 m/min.
切り込み: 1.2 mm
送り: 0.10 mm/tooth.
切削長10.0mまで切削し、逃げ面摩耗幅を測定し、刃先の損耗状態を観察した。
切削試験の結果を表11、12に示す。
切削条件:
被削材:幅60mm×長さ200mmのブロック材(SNCM435製)
切削速度: 200 m/min.
切り込み: 1.2 mm
送り: 0.10 mm/tooth.
切削長10.0mまで切削し、逃げ面摩耗幅を測定し、刃先の損耗状態を観察した。
切削試験の結果を表13、14に示す。
これに対して、比較例1~9、11~19、チッピングの発生、あるいは、逃げ面摩耗の進行により、短時間で寿命に至っていることは明らかである。
2 被覆層
3 下部層A
4 上部層B
5 下部層A1
6 下部層A2
7 A1α層
8 A1β層
9 A2γ層
10 A2δ層
Claims (2)
- 基体と該基体に設けられた被覆層を有する表面被覆切削工具であって、
前記被覆層は、下部層Aと該下部層A上の上部層Bを有し、
前記下部層Aの平均厚さAtは0.3μm以上、6.0μm以下であり、前記上部層Bの平均厚さBtは0.1μm以上、3.0μm以下であって、2.0≦At/Bt≦5.0であり、
前記下部層Aは、平均厚さαtのA1α層と平均厚さβtのA1β層の交互積層を有し、
0.5nm≦αt≦4.0nm、0.5nm≦βt≦4.0nm、0.7≦βt/αt≦1.3であり、
前記A1α層の組成は、AlxTi1-xN(xの平均値であるxavgが、0.35≦xavg≦0.55)、
前記A1β層の組成は、AlyTi1-yN(yの平均値であるyavgが、0.60≦yavg≦0.80)であって、
1.2≦yavg/xavgを満足し、
前記上部層Bの組成は、AlaTi1-a-bSibN(aの平均値であるaavg、bの平均値であるbavgが、ぞれぞれ、0.35≦aavg≦0.60、0.00<bavg≦0.15)である
ことを特徴とする表面被覆切削工具。 - 前記下部層Aは前記基体の側の下部層A1と前記上部層Bの側の下部層A2であり、
前記下部層A1の平均厚さA1tと前記下部層A2の平均厚さA2tは、0.1μm≦A1t≦4.5μm、0.2μm≦A2t≦4.0μm、0.5≦A1t/A2t≦3.0であり、
前記下部層A1は、前記A1α層と前記A1β層の前記交互積層であり、
前記下部層A2は、平均厚さγtのA2γ層と平均厚さδtのA2δ層の交互積層であり、
1.5nm≦γt≦8.0nm、1.5nm≦δt≦8.0nm、0.7≦δt/γt≦1.3であって、
1.0<(γt+δt)/(αt+βt)≦6.0であり、
前記A2γ層の組成は、AlzTi1-zN(zの平均値であるzavgが、0.30≦zavg≦0.50)、
前記A2δ層の組成は、AlwTi1-wN(wの平均値であるwavgが、0.55≦wavg≦0.75)であって、
1.2≦wavg/zavgを満足し、
かつ、0.02≦(xavg-zavg)≦0.30、0.02≦(yavg-wavg)≦0.30である
ことを特徴とする請求項1に記載の表面被覆切削工具。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2024510079A JP7794294B2 (ja) | 2022-03-22 | 2023-03-16 | 表面被覆切削工具 |
| KR1020247031358A KR20240165354A (ko) | 2022-03-22 | 2023-03-16 | 표면 피복 절삭 공구 |
| CN202380029029.XA CN118922264A (zh) | 2022-03-22 | 2023-03-16 | 表面包覆切削工具 |
| EP23774722.5A EP4497522A4 (en) | 2022-03-22 | 2023-03-16 | COATED SURFACE CUTTING TOOL |
| US18/848,223 US20250214147A1 (en) | 2022-03-22 | 2023-03-16 | Surface-coated cutting tool |
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| JP2022045633 | 2022-03-22 |
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| Country | Link |
|---|---|
| US (1) | US20250214147A1 (ja) |
| EP (1) | EP4497522A4 (ja) |
| JP (1) | JP7794294B2 (ja) |
| KR (1) | KR20240165354A (ja) |
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| WO (1) | WO2023182126A1 (ja) |
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| JPH0797679A (ja) | 1993-09-30 | 1995-04-11 | Sumitomo Electric Ind Ltd | 超薄膜積層体 |
| JP2015110259A (ja) | 2013-11-05 | 2015-06-18 | 日立金属株式会社 | 被覆切削工具 |
| JP2015529571A (ja) * | 2012-08-03 | 2015-10-08 | バルター アクチェンゲゼルシャフト | TiAlN被覆工具 |
| WO2015186503A1 (ja) * | 2014-06-06 | 2015-12-10 | 住友電工ハードメタル株式会社 | 表面被覆工具およびその製造方法 |
| JP2017018551A (ja) | 2015-07-13 | 2017-01-26 | 富三 大西 | 透明剣山付き花器 |
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| JP2022045633A (ja) | 2020-09-09 | 2022-03-22 | 国立大学法人九州大学 | 抗真菌剤組成物、化合物及び抗真菌剤 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0972091A1 (en) * | 1998-02-04 | 2000-01-19 | OSG Corporation | Multilayer coated tool |
| EP3839097A1 (en) * | 2019-12-19 | 2021-06-23 | Walter Ag | A coated cutting tool |
-
2023
- 2023-03-16 EP EP23774722.5A patent/EP4497522A4/en active Pending
- 2023-03-16 KR KR1020247031358A patent/KR20240165354A/ko active Pending
- 2023-03-16 JP JP2024510079A patent/JP7794294B2/ja active Active
- 2023-03-16 US US18/848,223 patent/US20250214147A1/en active Pending
- 2023-03-16 WO PCT/JP2023/010248 patent/WO2023182126A1/ja not_active Ceased
- 2023-03-16 CN CN202380029029.XA patent/CN118922264A/zh active Pending
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| JPH0797679A (ja) | 1993-09-30 | 1995-04-11 | Sumitomo Electric Ind Ltd | 超薄膜積層体 |
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| JP2015110259A (ja) | 2013-11-05 | 2015-06-18 | 日立金属株式会社 | 被覆切削工具 |
| WO2015186503A1 (ja) * | 2014-06-06 | 2015-12-10 | 住友電工ハードメタル株式会社 | 表面被覆工具およびその製造方法 |
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| JP2017018551A (ja) | 2015-07-13 | 2017-01-26 | 富三 大西 | 透明剣山付き花器 |
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| JP2017193004A (ja) | 2016-04-19 | 2017-10-26 | 住友電工ハードメタル株式会社 | 表面被覆切削工具 |
| JP2020520814A (ja) * | 2017-05-19 | 2020-07-16 | ヴァルター アーゲー | 多層コーティングを有する金属切削ツール |
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| CN118922264A (zh) | 2024-11-08 |
| JPWO2023182126A1 (ja) | 2023-09-28 |
| EP4497522A4 (en) | 2026-02-18 |
| JP7794294B2 (ja) | 2026-01-06 |
| US20250214147A1 (en) | 2025-07-03 |
| KR20240165354A (ko) | 2024-11-22 |
| EP4497522A1 (en) | 2025-01-29 |
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