EP1527206A2 - Procede de fabrication d'une fibre ceramique comportant un revetement metallique - Google Patents

Procede de fabrication d'une fibre ceramique comportant un revetement metallique

Info

Publication number
EP1527206A2
EP1527206A2 EP03784038A EP03784038A EP1527206A2 EP 1527206 A2 EP1527206 A2 EP 1527206A2 EP 03784038 A EP03784038 A EP 03784038A EP 03784038 A EP03784038 A EP 03784038A EP 1527206 A2 EP1527206 A2 EP 1527206A2
Authority
EP
European Patent Office
Prior art keywords
fiber
metal coating
ceramic fiber
base part
outer shape
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Withdrawn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
EP03784038A
Other languages
German (de)
English (en)
Inventor
Joachim Bamberg
Wilhelm Satzger
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.)
MTU Aero Engines AG
Original Assignee
MTU Aero Engines GmbH
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 MTU Aero Engines GmbH filed Critical MTU Aero Engines GmbH
Publication of EP1527206A2 publication Critical patent/EP1527206A2/fr
Withdrawn legal-status Critical Current

Links

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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/58—After-treatment
    • C23C14/5886—Mechanical treatment
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/4584—Coating or impregnating of particulate or fibrous ceramic material
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
    • C22C47/02—Pretreatment of the fibres or filaments
    • C22C47/04—Pretreatment of the fibres or filaments by coating, e.g. with a protective or activated covering
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
    • C22C47/02—Pretreatment of the fibres or filaments
    • C22C47/06—Pretreatment of the fibres or filaments by forming the fibres or filaments into a preformed structure, e.g. using a temporary binder to form a mat-like element
    • C22C47/062—Pretreatment of the fibres or filaments by forming the fibres or filaments into a preformed structure, e.g. using a temporary binder to form a mat-like element from wires or filaments only
    • C22C47/068—Aligning wires
    • 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
    • C23C14/14—Metallic material, boron or silicon
    • C23C14/18—Metallic material, boron or silicon on other inorganic substrates
    • 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
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

Definitions

  • the invention relates to a method for producing a ceramic fiber with a metal coating according to the type specified in the preamble of claim 1.
  • Such ceramic fibers with a metal coating are used for the production of fiber-reinforced foils, sheets or strips with an IV metal matrix, as are disclosed, for example, in US Pat. No. 4,733,816 and US Pat. No. 4,4-99,156.
  • fibers silicon carbide fibers, silicon-coated silicon carbide fibers, silicon carbide-coated boron fibers or boron carbide-coated boron fibers are used. Only titanium-based alloys are available as matrix material.
  • MMCs metal matrix components
  • the known reinforcing fibers made of ceramic fiber with a metal coating have a circular outer shape on average.
  • both the ceramic fiber is circular in section and the metal layer applied to the ceramic fiber is circular.
  • Reinforcing fibers of this type are wound on base parts in such a way that a plurality of reinforcing fibers are applied next to one another and also one above the other, cavities being formed between the reinforcing fibers. After the reinforcing fiber has been applied, the whole is consolidated by hot isostatic hot pressing. This leads to volume flow shrinkage, the voids disappear and leads to the associated fiber migration. In the case of three-dimensional structures, fiber loads, such as kinking and breaking, and different fiber displacements, such as fiber missor removal, are associated with this.
  • the known constructions with the reinforcing fibers therefore lead, among other things, to fatigue cracks, less breakage resistance and a shorter service life, in particular in the case of the metal matrix components (MMCs) produced from the reinforcing fibers.
  • the invention has for its object to develop a method for producing a ceramic fiber with a metal coating according to the type specified in the preamble of claim 1 in such a way that, while avoiding the disadvantages mentioned, an inexpensive method is specified in which the reinforcing fibers are arranged in a predetermined exact arrangement can be brought together in a simple manner.
  • the invention is based on the knowledge that there are external shapes which allow a plurality of reinforcing fibers to be arranged next to and above one another without voids. As a result, subsequent pressing operations can be carried out without volume shrinkage eliminating the cavity, as a result of which there is no fiber migration and thus an exact fiber arrangement over the cross section of, for example, a metal matrix component (MMC).
  • MMC metal matrix component
  • the metal coating on the ceramic fiber is converted into an outer shape which is polygonal in cross section and which enables a cavity-free composite of adjacent reinforcing fibers next to and on top of one another.
  • the polygonal outer shape is stamped onto the metal layer by cold rolling.
  • each surface can be assigned a roller or profiled rollers are provided which together form the polygon profile.
  • the polygon profile of the outer shape of the reinforcing fiber is hexagonal in section.
  • the ceramic fiber is preferably first provided with a metal coating and then the polygonal outer shape is embossed.
  • conventional reinforcing fibers can be used, since these are only subsequently embossed with the polygonal outer shape.
  • the conventional reinforcing fibers usually have a round outer shape on average.
  • the ceramic fibers also have a round outer shape.
  • the metal coating is provided with a thickness which is essentially constant over the circumference before being embossed.
  • titanium in particular Ti64, is used as the metal coating.
  • the ceramic fiber essentially comprises the elements silicon (Si), carbon (C), boron (B), oxygen (0), aluminum (Al) and / or nitrogen (N).
  • the reinforcing fibers are mainly used for the production of Meta I-Matrix Components (MMCs).
  • the reinforcing fibers are used to produce a semi-finished product.
  • the ceramic fiber is wound onto a base part without a cavity. This is easily possible due to the polygonal outer shape.
  • the winding process with the polygonal outer shape of the reinforcing fibers creates an identical groove template for the next one
  • Winding layer This results in dimensionally exact contact surfaces even with fluctuations in the metal layer. There is a geometrically exact fiber arrangement without error accumulation. In addition, easy-to-check winding in grooves - reflecting surface - is easily possible.
  • the base part has grooves on its surface into which the ceramic fibers are inserted.
  • a hot isostatic pressing process is carried out. Due to the void-free winding, the hot isostatic pressing process without shrinking in volume. As a result, there is no fiber migration, which in turn enables an exact and predetermined fiber arrangement on the base part.
  • the pitch height can be, for example, 0.4 mm, which means that only half a fiber length per layer is required - Lmax requirement -.
  • a closure part in particular made of the metal that forms the metal layer of the reinforcing fiber, is shrunk onto the free ends of the wound base part.
  • the outer layer can be covered with another metal layer, such as a shrunk-on metal ring.
  • the base part is preferably designed as a rotationally symmetrical ICody.
  • Fiber jumps are, for example, 30 ⁇ m for a round fiber and 10 ⁇ m for a reinforcing fiber according to the invention, for example with a hesxagonal outer shape.
  • the ends of the reinforcing fibers run out at 45 ° on axial end faces / surfaces near_h. By subsequent shot peening this leads to pressure id at the fiber end.
  • the reinforcing fiber can be produced in that a ceramic fiber and two metal foils are passed through a double roller with a polygonal profile for the outer shape.
  • Figure 1 is a schematic, perspective view of two rollers and a reinforcing fiber.
  • FIG. 2 shows a cross section through the rollers with the reinforcing fiber from FIG. 1; 3 shows a base part with grooves on which the reinforcing fiber is wound;
  • Fig. 4 shows the reinforcing fiber before and after stamping a polygonal outer shape
  • Fig. 5 shows a plurality of rollers which emboss a polygonal outer shape on a reinforcement fiber according to an alternative embodiment of the invention.
  • rollers 10 and 12 are shown schematically.
  • the rollers 10 and 1 2 are constructed correspondingly to one another and each have polygonal depressions 16 and 18 assigned to one another in the rolling region 14.
  • the two mutually associated polygonal depressions 16 and 18 emboss a reinforcing fiber 20 with a hexagonal outer shape, in a metal layer 24 surrounding a ceramic fiber 22, see FIG. 2.
  • the reinforcing fiber 20 consists of the ceramic fiber 22 and the metal coating 24.
  • the ceramic fiber 22 has an outer shape which is round in section and an annular metal coating 24 before the polygonal outer shape is impressed on it.
  • the all-metal coating 24 has been applied by means of a PVD process
  • Kerarnik fiber 22 is a silicon carbide fiber.
  • the metal coating 24 is a titanium alloy.
  • the ceramic fiber 22 has a diameter of 140 ⁇ m with a metal coating 24 of 30 ⁇ m, see FIG. 4.
  • the length a is approximately 110 ⁇ m and the length b is approximately 190 ⁇ m.
  • the reinforcing fiber 20 is wound onto a rotationally symmetrical base part 26, see FIG. 3_.
  • the surface of the base part 26 has grooves 28 which are adapted to the polygonal outer shape in such a way that half of the reinforcing fiber 20 can be introduced into the groove 28.
  • the groove 28 runs spirally on the surface, so that an endless winding can be produced. If the first layer of reinforcing fibers 20 has been introduced into the ut 28 as shown in FIG. 3, a further layer of reinforcing fibers 20 is introduced into the spaces between adjacent reinforcing fibers 20.
  • the further layer of reinforcing fibers 20 lies directly and without voids on the first layer of reinforcing fibers 20 and on the surface of the base part 26.
  • the grooves 28 are spirally introduced into the surface of the base part 26 at a distance from one another.
  • a void-free composite is formed from a plurality of reinforcing fibers 20 arranged side by side and one above the other. The composite is then hot isostatically pressed together with the base part, with no volume shrinkage and the associated disadvantages.
  • each roller 30 to 40 is assigned to a surface of the polygonal outer shape of the reinforcing fiber 20. With the aid of the rollers 30 to 40, the reinforcing fiber 20 is converted from an outer shape which is round in section to an outer shape which is polygonal in section, in this case hexagonal outer shape. This results in the advantages mentioned above.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une fibre céramique (22) comportant un revêtement métallique (24), constituant une fibre de renforcement (20). Selon l'invention, le revêtement métallique (24) est transféré dans un moule extérieur de section polygonale, permettant d'assembler sans espaces creux des fibres de renforcement (20) adjacentes, dans le sens horizontal et vertical.
EP03784038A 2002-08-05 2003-07-22 Procede de fabrication d'une fibre ceramique comportant un revetement metallique Withdrawn EP1527206A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10235818 2002-08-05
DE10235818A DE10235818B4 (de) 2002-08-05 2002-08-05 Verfahren zur Herstellung einer Verstärkungsfaser, Verwendung derart hergestellter Verstärkungsfasern sowie Verfahren zur Herstellung eines Halbzeugs mit derart hergestellten Verstärkungsfasern
PCT/EP2003/007972 WO2004015163A2 (fr) 2002-08-05 2003-07-22 Procede de fabrication d'une fibre ceramique comportant un revetement metallique

Publications (1)

Publication Number Publication Date
EP1527206A2 true EP1527206A2 (fr) 2005-05-04

Family

ID=30469461

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03784038A Withdrawn EP1527206A2 (fr) 2002-08-05 2003-07-22 Procede de fabrication d'une fibre ceramique comportant un revetement metallique

Country Status (4)

Country Link
US (1) US20060123849A1 (fr)
EP (1) EP1527206A2 (fr)
DE (1) DE10235818B4 (fr)
WO (1) WO2004015163A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006048912A1 (de) * 2006-10-17 2008-04-24 Zipper-Technik Gmbh Verfahren zur Herstellung eines Wärmeschutzes

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4499156A (en) * 1983-03-22 1985-02-12 The United States Of America As Represented By The Secretary Of The Air Force Titanium metal-matrix composites
US4733816A (en) * 1986-12-11 1988-03-29 The United States Of America As Represented By The Secretary Of The Air Force Method to produce metal matrix composite articles from alpha-beta titanium alloys
DE4141054C1 (fr) * 1991-12-13 1993-07-22 Deutsche Aerospace Ag, 8000 Muenchen, De
CA2134466A1 (fr) * 1992-04-28 1993-11-11 George E. Zahr Methode pour l'obtention de composites supraconducteurs sous forme de tiges sous gaine
JPH05342933A (ja) * 1992-06-12 1993-12-24 Furukawa Electric Co Ltd:The Ｎｂ３Ｓｎ系化合物超電導線の製造方法
DE69306930T2 (de) * 1993-03-19 1997-05-07 Secr Defence Brit Verfahren zur Herstellung von durch Keramikfasern verstärkte Verbundkörper mit metallischen Matrizen
JP3567003B2 (ja) * 1994-12-19 2004-09-15 株式会社日立製作所 タリウム系超電導線
US5890268A (en) * 1995-09-07 1999-04-06 Case Western Reserve University Method of forming closed cell metal composites
GB9619890D0 (en) * 1996-09-24 1996-11-06 Rolls Royce Plc A method of making a fibre reinforced metal component

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004015163A2 *

Also Published As

Publication number Publication date
WO2004015163A3 (fr) 2004-04-08
DE10235818B4 (de) 2005-01-05
US20060123849A1 (en) 2006-06-15
DE10235818A1 (de) 2004-02-19
WO2004015163A2 (fr) 2004-02-19

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