Nickel-base superalloy article substrate having aluminide coating thereon, and its fabrication
US6844086B2 · kind B2 · utility
3Cited by
6References
26Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 8, 2002 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Apr 5, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A coated superalloy article is prepared by furnishing a nickel-base superalloy article substrate having a rhenium content of not less than about 4.0 percent by weight, and thereafter depositing an aluminum-containing coating onto a surface of the article substrate. The aluminum-containing coating includes an additive zone having an average aluminum content of not greater than about 27 percent by weight, and a diffusion zone of interdiffusion with the article substrate. A ratio of a thickness of the additive zone to a thickness of the diffusion zone is not greater than about 3:1, and is preferably about 1:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.