Protective layer for protecting a component against corrosion and oxidation at high temperatures, and component
US8025984B2 · kind B2 · utility
9Cited by
10References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 8, 2004 |
| Grant date | Sep 27, 2011 |
| Priority date | — |
| Expiry date | Oct 13, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12944
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Known protective layers with a high Al and/or Cr content and additionally strengthened by Re form brittle phases which become more brittle during use under the influence of carbon. The protective layer according to the invention has the composition 0.5 to 2% rhenium, 24 to 26% cobalt, 15 to 21% chromium, 9 to 11.5% aluminum, 0.05 to 0.7% yttrium and/or at least one equivalent metal selected from the group consisting of scandium and the rare earth elements, 0 to 1% ruthenium, remainder cobalt and/or nickel and manufacturing-related impurities, and reveals scarcely any embrittlement caused by Cr/Re precipitates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.