Product designed to be subjected to the effects of hot gas and method for producing a coating for this product
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B32B-009/00
C23C-008/02
C23C-028/00
출원번호
US-0530639
(2000-07-10)
우선권정보
DE-0048538 (1997-11-03)
국제출원번호
PCT/DE98/03123
(1998-10-21)
국제공개번호
WO99/23277
(1999-05-14)
발명자
/ 주소
Beele, Wolfram
출원인 / 주소
Siemens Aktiengesellschaft
대리인 / 주소
Eckert Seamans Cherin & Mellott, LLC
인용정보
피인용 횟수 :
6인용 특허 :
3
초록▼
The invention relates to a product (1) designed for hot gas admission with a coating (3) in which chromium nitride (6) is inserted as a diffusion barrier to improve the long-term stability of the coating (3). The invention furthermore relates to a process for producing a coating (3) for a product de
The invention relates to a product (1) designed for hot gas admission with a coating (3) in which chromium nitride (6) is inserted as a diffusion barrier to improve the long-term stability of the coating (3). The invention furthermore relates to a process for producing a coating (3) for a product designed for hot gas admission (1).
대표청구항▼
1. A product designed for hot gas admission made of a base material to which a coating is applied, comprising: a) a protective coating of MCrAlY disposed on the base material, comprising: at least one metal selected from the group (iron, cobalt and nickel), abbreviated as M, chromium (Cr) with
1. A product designed for hot gas admission made of a base material to which a coating is applied, comprising: a) a protective coating of MCrAlY disposed on the base material, comprising: at least one metal selected from the group (iron, cobalt and nickel), abbreviated as M, chromium (Cr) with a content of at least 15 wt-%, aluminum (Al), and yttrium (Y) and/or hafnium and/or a metal selected from the rare earth group; b) an oxide layer disposed on the protective coating; c) a ceramic thermal barrier coating disposed on the oxide layer; and chromium nitride included in the oxide layer. 2. A product designed for hot gas admission made of a base material to which a coating is applied, comprising: a) a protective coating of MCrAlY disposed on the base material, comprising: at least one metal selected from the group (iron, cobalt and nickel), abbreviated as M, chromium (Cr) with a content of at least 15 wt-%, aluminum (Al), and yttrium (Y) and/or hafnium and/or a metal selected from the rare earth group; b) an oxide layer disposed on the protective coating; c) a ceramic thermal barrier coating disposed on the oxide layer; and chromium nitride is present between the protective coating and the oxide layer. 3. The product as claimed in claim 1, wherein the chromium nitride is included in a concentration of between 10 at-% and 60 at-%. 4. The product as claimed in claim 1, wherein the chromium nitride forms an approximately rectangular or square lattice with a lateral length of between 0.1 μm and 5 μm. 5. The product as claimed in claim 1, which is designed as a turbine blade. 6. The product as claimed in claim 1, which is designed as a heat shield element of a thermal machine. 7. The product as claimed in claim 1, wherein the ceramic thermal barrier coating is a zirconium oxide-based thermal barrier coating. 8. A process for producing a protective coating for a product resistant to a hot gas, including the steps of: a) applying the product of a protective coating of MCrAlY, comprising: at least one metal selected from the group (iron, cobalt and nickel), abbreviated as M, chromium (Cr) with a content of at least 15 wt-%, aluminum (Al), and yttrium (Y) or hafnium or a metal selected from the rare earth group; b) forming an oxide layer on the protective coating, and; c) producing chromium nitride between the protective coating and the oxide layer via a nitrogen supply. 9. The process as claimed in claim 8, wherein the nitrogen supply is effected via a nitrogen plasma treatment. 10. The process as claimed in claim 8, wherein a nitrogen plasma from a nitrogen plasma source containing, in addition, hydrogen as an oxygen getter is supplied to the coating. 11. The process as claimed in claim 8, wherein a DC voltage, between 50 V and 600 V, is applied between the nitrogen plasma source and the product. 12. A process for producing a protective coating for a product resistant to a hot gas, including the steps of: a) applying the product of a protective coating of MCrAlY, comprising: at least one metal selected from the group (iron, cobalt and nickel), abbreviated as M, chromium (Cr) with a content of at least 15 wt-%, aluminum (Al), and yttrium (Y) or hafnium or a metal selected from the rare earth group; b) forming an oxide layer on the protective coating, and; c) producing chromium nitride in the oxide layer via a nitrogen supply.
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이 특허에 인용된 특허 (3)
Vance Steven J. ; Goedjen John G. ; Sabol Stephen M. ; Sloan Kelly M., Gaseous modification of MCrAlY coatings.
Schmitz Friedhelm (Dinslaken DEX) Czech Norbert (Essen DEX) Deblon Bruno (Mlheim/Ruhr DEX), Metallic component of a gas turbine installation having protective coatings.
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