Composite material component with silicon-containing ceramic matrix, protected against corrosion
US8455103B2 · kind B2 · utility
6Cited by
5References
6Claims
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Key dates
| Filing date | Apr 3, 2007 |
| Grant date | Jun 4, 2013 |
| Priority date | — |
| Expiry date | Feb 27, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/263
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An environmental barrier is formed on a substrate (10) of ceramic matrix composite material and comprises an outer anticorrosion protection layer (12) containing a compound of the type comprising an aluminosilicate of an alkali, or an alkaline-earth, or a rare-earth element. A bond sub-layer (14) is formed between the substrate (10) and the protection layer (12), the composition of the bond sub-layer varying from substantially pure silicon to substantially pure mullite between an inner face beside the substrate and an outer face, with the silicon content decreasing and the mullite content increasing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.