[미국특허]
Process for producing a cladding for a metallic component
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C23C-002/14
C23C-004/18
출원번호
US-0347273
(2003-01-21)
우선권정보
DE-198 27 620(1998-06-20)
발명자
/ 주소
Wydra,Gerhard
출원인 / 주소
MTU Aero Engines GmbH
대리인 / 주소
Crowell &
인용정보
피인용 횟수 :
5인용 특허 :
5
초록▼
The invention relates to a process for producing a cladding for a metallic component, such as for example a tip of a turbine blade, which cladding is provided on that surface of the component which is to be clad, the process being simple and inexpensive to carry out in terms of manufacturing technol
The invention relates to a process for producing a cladding for a metallic component, such as for example a tip of a turbine blade, which cladding is provided on that surface of the component which is to be clad, the process being simple and inexpensive to carry out in terms of manufacturing technology and involving the following steps: producing a slip by mixing a powder, which contains at least one of the elements Ni, Cr or Ce, with a binder; applying the slip to the surface which is to be clad; adding ceramic particles before or after the slip is applied; drying the slip at a temperature of from room temperature to 300째 C.; and alitizing the layer of slip.
대표청구항▼
The invention claimed is: 1. Process for producing a cladding for a turbine blade, which cladding is provided on the tip of this blade, characterized by the following steps: producing a slip by mixing a powder, which contains at least one of the elements Ni or Cr or Ce, with a binder; applying the
The invention claimed is: 1. Process for producing a cladding for a turbine blade, which cladding is provided on the tip of this blade, characterized by the following steps: producing a slip by mixing a powder, which contains at least one of the elements Ni or Cr or Ce, with a binder; applying the slip to the surface which is to be clad; adding hard ceramic particles to the slip before or after the slip is applied, the size of which particles is selected in such a way that they project above a layer of slip following alitizing; drying the slip at a temperature of from room temperature to 300째 C.; and alitizing the layer of slip. 2. Process according to claim 1, characterized in that the particles are admixed to the slip before it is applied. 3. Process according to claim 2, characterized in that particles of BN, SiC or Al2O3 are used. 4. Process according to claim 2, characterized in that the slip is produced from a powder of MCrAlY. 5. Process according to claim 2, characterized in that the powder is present with a grain size distribution of from 5 to 120 micron. 6. Process according to claim 1, characterized in that the particles are introduced into the slip after it has been applied. 7. Process according to claim 6, characterized in that particles of BN, SiC or Al2O3 are used. 8. Process according to claim 6, characterized in that the slip is produced from a powder of MCrAlY. 9. Process according to claim 6, characterized in that the powder is present with a grain size distribution of from 5 to 120 micron. 10. Process according to claim 1, characterized in that particles of BN, SiC or Al2O3 are used. 11. Process according to claim 10, characterized in that the powder is present with a grain size distribution of from 5 to 120 micron. 12. Process according to claim 1, characterized in that the slip is produced from a powder of MCrAlY. 13. Process according to claim 12, characterized in that the powder is present with a grain size distribution of from 5 to 120 micron. 14. Process according to claim 1, characterized in that the powder is present with a grain size distribution of from 5 to 120 micron. 15. Process according to claim 1, characterized in that the application is carried out by spraying, brushing or dipping. 16. Process according to claim 1, characterized in that the drying is carried out over a period of 0.5-4 hours. 17. Process according to claim 1, characterized in that the layer of slip is heat-treated at a temperature of from 750 to 1,200째 C. under argon or in vacuo prior to the alitizing. 18. Process according to claim 17, characterized in that the heat treatment is carried out over a period of 1 to 4 hours. 19. Process according to claim 1, characterized in that the surface which is to be clad consists of a nickel-base or cobalt-base alloy. 20. Process according to claim 1, characterized in that the alitizing is carried out at a temperature of between 800 and 1,200째 C. and for a period of from 1 to 12 hours.
Walter Heinrich (Derching DEX) Pillhfer Horst (Rhrmoos DEX) Strasser Michael (Kleinberghofen DEX) Brungs Frank (Dachau DEX) Kropp Ralph (Mnchen DEX) Schaipp Martin (Junkenhofen DEX), Component with protective arrangement to prevent aluminizing or chromizing during gas diffusion coating.
Cork Frank (Alvaston EN) Bettridge David Frederick (Chaddesden EN) Clarke Philip Charles (Derby EN), Method of and mixture for aluminizing a metal surface.
Martinengo Pier C. (Turin ITX) Carughi Carlo (Cantalupa ITX), Process for producing protective coatings on metals and metal alloys for use at high temperatures.
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