Environmental barrier coatings providing CMAS mitigation capability for ceramic substrate components
US8273470B2 · kind B2 · utility
13Cited by
16References
9Claims
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Key dates
| Filing date | Dec 19, 2008 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | Jul 30, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Environmental barrier coatings having CMAS mitigation capability for silicon-containing components. In one embodiment, the barrier coating includes a bond coat layer comprising aluminide-alumina TGO; and an outer layer selected from the group consisting of AeAl2O19, AeHfO3, AeZrO3, ZnAl2O4, MgAl2O4, Ln4Al2O9, Lna4Ga2O9, Ln3Al5O12, Ln3Ga5O12, Ga2O3, HfO2, and LnPO4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.