Environmental barrier coating
US6844075B1 · kind B1 · utility
46Cited by
24References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2003 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Oct 6, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A coating for a silicon based material such as those used in high temperature environments. An aspect of the invention is directed to an environmental barrier coating including a silicon bond coat, and intermediate coat, and a top coat. The intermediate coat may comprise tantalum aluminate, niobium aluminate, or a mixture of the two. The intermediate coat is resistant to solid-state suburface reactions with the bond coat and the top coat and is substantially inert to reactions with silica at high temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.