Product to be exposed to a hot gas and having a thermal barrier layer, and process for producing the same
US6319614A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 10, 1999 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Jun 10, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12611
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A product which is to be exposed to a hot gas and has a thermal barrier layer, such as a component for hot gas ducts (turbine blades, heat shields, etc.), has a metallic base body made of a superalloy based on nickel, cobalt or iron. An adhesion promoter layer also serves to form aluminum oxide/chromium oxide. A thermal barrier layer is formed of a ternary or pseudoternary oxide having a pyrochlore or perovskite structure. The oxide is stable with respect to phase between room temperature and melting temperature even in the absence of a phase stabilizer. A process is provided for producing components of that type by atmospheric plasma spraying or electron beam PVD methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.