Bond or overlay MCrAIY-coating
US6924045B2 · kind B2 · utility
2Cited by
20References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 2002 |
| Grant date | Aug 2, 2005 |
| Priority date | — |
| Expiry date | Sep 19, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/25
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
It is disclosed a bond or overlay MCrAlY-coating for the use within a high temperature environment for the protection of the base alloy of turbine blades and vanes. The MCrAlY-coating having a γ or γ/γ′-structure comprises a dispersion of β-NiAl and/or γ/β-MCrAlY particles. This provides a reservoir of aluminum reservoir to coatings wherein the reservoir replenish the aluminum lost due to oxidation and interdiffusion during service. The β-NiAl and/or γ/β-MCrAlY is the aluminum reservoir and is applied by mixing appropriate powders with γ or γ/γ′ powders.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.