Thermal oxidative barrier coatings for organic matrix composite substrates and coated articles
US7776433B2 · kind B2 · utility
2Cited by
1References
16Claims
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Key dates
| Filing date | Nov 30, 2006 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Jan 7, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31721
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thermal oxidative barrier coating for organic matrix composites includes a bond coat having nano-particles dispersed in a polyimide matrix and a thermal barrier layer comprising a silsesquioxane or an inorganic polymer. The nano-particles may include clay platelets, graphite flakes or a polyhedral oligomeric silsesquioxane. The coated article may be utilized in gas turbine engine applications, particularly for a flow path duct adapted for exposure to high temperature, oxygen-containing environments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.