Erosion barrier for thermal barrier coatings
US8470458B1 · kind B1 · utility
3Cited by
10References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2010 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Dec 9, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24917
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A workpiece, such as a turbine engine component, comprises a substrate, a thermal barrier coating on the substrate, and a hard erosion barrier deposited over the thermal barrier coating. The erosion barrier preferably has a Vickers hardness in the range of from 1300 to 2750 kg/mm2. The erosion barrier may be formed from aluminum oxide, silicon carbide, silicon nitride, or molybdenum disilicide. The erosion barrier may be formed using either an electrophoretic deposition process or a slurry process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.