Coating system for superalloys
US4080486A · kind A · utility
21Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1974 |
| Grant date | Mar 21, 1978 |
| Priority date | — |
| Expiry date | Sep 24, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12931
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A protective coating system is provided for nickel-base and cobalt-base superalloys which is capable of imparting oxidation and corrosion resistance at elevated temperatures. The superalloy body is first coated by physical vapor deposition with a composition consisting essentially of chromium, aluminum, a member selected from the group consisting of yttrium and the rare earth elements, and at least one element selected from the group consisting of iron, cobalt and nickel, and thereafter the body is subjected to an aluminizing overcoating to increase the corrosion resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.