Method for fabricating a component having an environmental barrier coating
US7910172B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2009 |
| Grant date | Mar 22, 2011 |
| Priority date | — |
| Expiry date | Oct 28, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/264
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for fabricating a component having an environmental barrier coating. The method includes providing a component including silicon having a first coefficient of thermal expansion. A bondcoat is bonded to at least a portion of an outer surface of the component. An intermediate layer having a general composition of RE2Si2O7 is bonded to the bondcoat. The intermediate layer has a second coefficient of thermal expansion matched to the first coefficient of thermal expansion. A protective layer having a general composition of RE2SiO5 is bonded to the intermediate layer. A surface layer is bonded to the protective layer. The surface layer includes RE and has a ratio of RE to oxygen of at least 2:3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.