EP1367144A1 - Procédé d'enlèvement des parties d'un composant métallique - Google Patents

Procédé d'enlèvement des parties d'un composant métallique Download PDF

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Publication number
EP1367144A1
EP1367144A1 EP02011965A EP02011965A EP1367144A1 EP 1367144 A1 EP1367144 A1 EP 1367144A1 EP 02011965 A EP02011965 A EP 02011965A EP 02011965 A EP02011965 A EP 02011965A EP 1367144 A1 EP1367144 A1 EP 1367144A1
Authority
EP
European Patent Office
Prior art keywords
component
diffusion means
layer
diffusion
acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02011965A
Other languages
German (de)
English (en)
Inventor
Ralph Reiche
Werner Dr. Stamm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to EP02011965A priority Critical patent/EP1367144A1/fr
Priority to PCT/EP2003/005573 priority patent/WO2003100110A2/fr
Priority to EP03735475A priority patent/EP1507882A2/fr
Priority to US10/516,085 priority patent/US20060112976A1/en
Publication of EP1367144A1 publication Critical patent/EP1367144A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/60—After-treatment
    • 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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/02—Pretreatment of the material to be coated
    • 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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F4/00—Processes for removing metallic material from surfaces, not provided for in group C23F1/00 or C23F3/00
    • 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents

Definitions

  • the invention relates to a method for removing one Part area, in particular a layer area of a Metal or metal compound existing component, which the subarea after application of the method easier to remove or remove.
  • the efficiency plays an important role, because thereby the costs for the operation of the gas turbine plant can be reduced.
  • the efficiency increase and thus reduce operating costs therein, inlet temperatures of a combustion gas within to increase a gas turbine.
  • thermal barrier coatings have been developed on thermally stressed components, for example made of superalloys, which are applied alone the high inlet temperatures in the long term no longer withstand could.
  • the ceramic thermal barrier coating offers the advantage of a high temperature resistance due to their ceramic properties and the metallic substrate offers the advantage of good mechanical properties in this composite or Layer system.
  • composition of these MCrAlY layers can vary, however, all MCrAlY layers are subject despite the overlying Ceramic layer of corrosion or degradation by Oxidation, sulfidation, nitridation, diffusion or others chemical and / or mechanical attacks.
  • the MCrAlY layer often degrades to a greater extent than the metallic substrate, ie the lifetime of the composite system of substrate and layer is determined by the lifetime of the MCrAlY layer.
  • the MCrAlY interlayer is only partially functional after prolonged use, however, the substrate can still be fully functional.
  • a process for the removal of corrosion products is out the US-PS 6,217,668 known.
  • the corroded component housed in a large crucible, wherein the component there in a powder bed with an aluminum source is arranged.
  • the crucible must be partially closed and then heated in an oven.
  • aluminum is supplied to the corroded component, which causes the areas by a subsequent acid treatment remove, which previously wear off worse had a higher erosion resistance.
  • the powder bed requires a lot of material and the crucible takes up a lot of space in the oven during the heat treatment. The heat process also takes because of the large heat capacity longer.
  • the invention overcomes the disadvantages described a method as described in claim 1.
  • the diffusion agent can be prepared by simple known coating methods such as plasma spraying, evaporation, CVD, packing methods (Component in the powder bed) or other methods (Paste order) are applied.
  • FIG. 1 shows a component 1 made of metal, a metal alloy or a metal compound which has corrosion products 4 on a surface 13 and / or in the interior of the component 1 in at least one partial region, which are present, for example, in regions formed separately from one another.
  • the corrosion products 4 may also be present continuously or on / under the entire surface 13, thus also forming a corrosion layer 4.
  • a portion 28 represents the dashed bordered area.
  • the component 1 can be solid or a layer or a region of a composite or layer system 14.
  • a substrate 7 made of metal or ceramic is present, on which the metallic layer 10, for example an MCrAlY layer is applied, where M means that a metal of nickel, chromium or iron is used.
  • the partial area 28 can also be a partial area of the layer 10 or the entire layer 10 of the layer system 14 and / or Represent part of the metallic substrate 7.
  • the corrosion products 4 have during the use of the Component 1 formed and are for further use of the Component undesirable and must be removed. This happens often by a treatment in an acid bath.
  • the material of the component 1 under or over the layer 10 degraded areas and / or the Corrosion products 4 a different reactivity in an acid bath, i. ablation resistant.
  • the different solution behavior in the acid bath is caused due to the different solution behavior of the corrosion products 4 or because an original composition the material of the component 1 or the layer 10 is changed has, e.g. because the corrosion product 4 is a region of Component 1 in the area around the corrosion product 4 a component withdraws and creates a depletion area there. Therefore there is an uneven erosion or no erosion the corrosion products 4 or the material in the depletion area.
  • the inventive method allows the Corrosion products or the modified layer or Base material areas completely and evenly with the Material of the component 1 or the layer 10 to remove.
  • a rough removal of corrosion products 4 or other areas by mechanical methods, e.g. sandblasting and / or chemical agents, e.g. Acid bath done.
  • a multicomponent diffusion agent 16 is applied to the corroded component 1 on the surface 13, in particular in the region with the corrosion product 4 or on the corrosion layer 4, for example, or at least one component of the diffusion agent 16 diffuses directly out the gas phase in the component 1, wherein the corrosion products 4 represent the erosion-resistant areas in this example.
  • the diffusion means 16 contains, for example, two components, both of which diffuse into the layer 10 or the component 1 by a heat treatment, where they change the chemical composition and materials. Due to the diffusion in and the heat treatment, new phases can also form, which can be removed more easily by means of an acid bath 19 (FIG. 4).
  • FIG. 3 shows a component according to FIG. 2, in which the diffusion means 16 is completely diffused into the layer 10 due to a heat treatment at a temperature T.
  • the layer 10 represents the portion 28 to be removed, which does not only consist of erosion-resistant areas.
  • the diffusion means 16 is at least two-component. At least one component of the diffusion means 16 is, for example, metallic such as aluminum. Another metallic component is, for example, cobalt. Other components may be silicon or carbon.
  • FIG. 4 shows two components which are arranged in an acid bath 19 or are exposed to an acid attack.
  • FIG. 5 shows the component 22 after the acid treatment.
  • the component 22 still has acid-resistant areas 25 which were not removed during the acid attack or less, so that an uneven removal of a layer region of the component 22 took place.
  • FIG. 6 shows a component 1 or layer system 14, in which a uniform removal of a layer region of Component 1 or the layer 10 was carried out.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • ing And Chemical Polishing (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
EP02011965A 2002-05-29 2002-05-29 Procédé d'enlèvement des parties d'un composant métallique Withdrawn EP1367144A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP02011965A EP1367144A1 (fr) 2002-05-29 2002-05-29 Procédé d'enlèvement des parties d'un composant métallique
PCT/EP2003/005573 WO2003100110A2 (fr) 2002-05-29 2003-05-27 Procédé permettant d'éliminer au moins une zone partielle d'une pièce en métal ou constituée d'un composite métallique
EP03735475A EP1507882A2 (fr) 2002-05-29 2003-05-27 Procede permettant d'eliminer au moins une zone partielle d'une piece en metal ou constituee d'un composite metallique
US10/516,085 US20060112976A1 (en) 2002-05-29 2003-05-27 Method for removing at least one partial area of a component made of metal or a metallic compound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02011965A EP1367144A1 (fr) 2002-05-29 2002-05-29 Procédé d'enlèvement des parties d'un composant métallique

Publications (1)

Publication Number Publication Date
EP1367144A1 true EP1367144A1 (fr) 2003-12-03

Family

ID=29414719

Family Applications (2)

Application Number Title Priority Date Filing Date
EP02011965A Withdrawn EP1367144A1 (fr) 2002-05-29 2002-05-29 Procédé d'enlèvement des parties d'un composant métallique
EP03735475A Withdrawn EP1507882A2 (fr) 2002-05-29 2003-05-27 Procede permettant d'eliminer au moins une zone partielle d'une piece en metal ou constituee d'un composite metallique

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP03735475A Withdrawn EP1507882A2 (fr) 2002-05-29 2003-05-27 Procede permettant d'eliminer au moins une zone partielle d'une piece en metal ou constituee d'un composite metallique

Country Status (3)

Country Link
US (1) US20060112976A1 (fr)
EP (2) EP1367144A1 (fr)
WO (1) WO2003100110A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008068070A1 (fr) * 2006-12-05 2008-06-12 Siemens Aktiengesellschaft Procédé de revêtement d'un composant doté d'ouvertures

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10769175B1 (en) 2014-06-20 2020-09-08 Amazon Technologies, Inc. Real-time hosted system analytics
US10776397B2 (en) 2014-06-20 2020-09-15 Amazon Technologies, Inc. Data interest estimation for n-dimensional cube computations
US11868372B1 (en) 2014-06-20 2024-01-09 Amazon Technologies, Inc. Automated hierarchy detection for cloud-based analytics

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB980727A (en) * 1963-09-23 1965-01-20 Coast Metals Inc Method of applying metallic coatings
US4687684A (en) * 1984-11-29 1987-08-18 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Process for diffusion coating metals
US6036995A (en) * 1997-01-31 2000-03-14 Sermatech International, Inc. Method for removal of surface layers of metallic coatings
EP1199377A2 (fr) * 2000-10-20 2002-04-24 General Electric Company Protection de la surface d'un article à base de nickel par une couche en alliage d'aluminium résistante à la corrosion

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3184292A (en) * 1964-07-08 1965-05-18 Du Pont Process and composition for diffusion coating refractory metals and product produced thereby
US4117179A (en) * 1976-11-04 1978-09-26 General Electric Company Oxidation corrosion resistant superalloys and coatings
US4965095A (en) * 1979-03-30 1990-10-23 Alloy Surfaces Company, Inc. Method for refurbishing used jet engine hot section airfoils
GB9116332D0 (en) * 1991-07-29 1991-09-11 Diffusion Alloys Ltd Refurbishing of corroded superalloy or heat resistant steel parts and parts so refurbished
EP0861927A1 (fr) * 1997-02-24 1998-09-02 Sulzer Innotec Ag Procédé de fabrication de structures monocristallines
US6042879A (en) * 1997-07-02 2000-03-28 United Technologies Corporation Method for preparing an apertured article to be recoated
US6010746A (en) * 1998-02-03 2000-01-04 United Technologies Corporation In-situ repair method for a turbomachinery component
US6328810B1 (en) * 1999-04-07 2001-12-11 General Electric Company Method for locally removing oxidation and corrosion product from the surface of turbine engine components
EP1162284A1 (fr) * 2000-06-05 2001-12-12 Alstom (Switzerland) Ltd Procédé de réparation d'un composant revêtu
EP1298230A1 (fr) * 2001-10-01 2003-04-02 Siemens Aktiengesellschaft Procédé pour enlever des produits de corrosion d'un composant métallique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB980727A (en) * 1963-09-23 1965-01-20 Coast Metals Inc Method of applying metallic coatings
US4687684A (en) * 1984-11-29 1987-08-18 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Process for diffusion coating metals
US6036995A (en) * 1997-01-31 2000-03-14 Sermatech International, Inc. Method for removal of surface layers of metallic coatings
EP1199377A2 (fr) * 2000-10-20 2002-04-24 General Electric Company Protection de la surface d'un article à base de nickel par une couche en alliage d'aluminium résistante à la corrosion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008068070A1 (fr) * 2006-12-05 2008-06-12 Siemens Aktiengesellschaft Procédé de revêtement d'un composant doté d'ouvertures
EP1932954A1 (fr) * 2006-12-05 2008-06-18 Siemens Aktiengesellschaft, A German Corporation Procédé pour revêtir un élement contenant des ouvertures

Also Published As

Publication number Publication date
US20060112976A1 (en) 2006-06-01
WO2003100110A2 (fr) 2003-12-04
WO2003100110A3 (fr) 2004-03-04
EP1507882A2 (fr) 2005-02-23

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