Repair of coated turbine vanes installed in module
US8505201B2 · kind B2 · utility
1Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2011 |
| Grant date | Aug 13, 2013 |
| Priority date | — |
| Expiry date | Jul 24, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/52
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of repairing a damaged coated vane from a turbine module without removing the vane from the module is taught. The method includes locally removing the coating in the vicinity of the damage as well as any underlying damage in the superalloy substrate. A diffusible coating precursor is then applied to the damage site. A heat treating fixture is then mounted on the vane and repair site is heated to up to 2000° F. in an inert environment to interdiffuse the coating precursor and the substrate. After the diffusion anneal, the vane is cleaned and the module is returned to service.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.