Method for applying or repairing thermal barrier coatings
US7094450B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2003 |
| Grant date | Aug 22, 2006 |
| Priority date | — |
| Expiry date | Apr 26, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12736
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method applying a thermal barrier coating to a metal substrate, or for repairing a thermal barrier coating previously applied by physical vapor deposition to an underlying aluminide diffusion coating that overlays the metal substrate. The aluminide diffusion coating is treated to make it more receptive to adherence of a plasma spray-applied overlay alloy bond coat layer. An overlay alloy bond coat material is then plasma sprayed on the treated aluminide diffusion coating to form an overlay alloy bond coat layer. A ceramic thermal barrier coating material is plasma sprayed on the overlay alloy bond coat layer to form the thermal barrier coating. In the repair embodiment of this method, the physical vapor deposition-applied thermal barrier coating is initially removed from the underlying aluminide diffusion coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.