Aluminide/MCrAlY coating system for superalloys
US6129991A · kind A · utility
36Cited by
5References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 14, 1997 |
| Grant date | Oct 10, 2000 |
| Priority date | — |
| Expiry date | Aug 14, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12944
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
High temperature oxidation resistance of an aluminide diffusion overcoated MCrAlY coating system is substantially improved by CVD over-aluminizing the MCrAlY type overlay coating under CVD conditions that result in reduced concentrations of such tramp impurities as S and P in the aluminized MCrAlY overlay coating region of the coating system. The CVD aluminizing conditions yield an outwardly grown aluminide over-coat on the underlying MCrAlY type coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.