Composite material part with a silicon-containing ceramic matrix protected against corrosion
US8137826B2 · kind B2 · utility
5Cited by
2References
20Claims
0Family size
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Key dates
| Filing date | Dec 6, 2007 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | Sep 26, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/263
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An environmental barrier for a substrate of ceramic matrix composite material containing silicon, in particular containing SiC, is formed by an anticorrosion protection layer containing an aluminosilicate type compound of an alkali or alkaline-earth or rare earth element, e.g. BSAS, with a chemical barrier forming layer of aluminum nitride being interposed between the substrate and the anticorrosion protection layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.