Modified MCrAlY coatings on turbine blade tips with improved durability
US7316850B2 · kind B2 · utility
14Cited by
24References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2004 |
| Grant date | Jan 8, 2008 |
| Priority date | — |
| Expiry date | Jan 8, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12931
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
There is provided a method for depositing a modified MCrAlY coating on a turbine blade tip. The method utilizes laser deposition techniques to provide a metallurgical bond between a turbine blade substrate, such as a superalloy substrate, and the modified MCrAlY composition. Further the modified MCrAlY coating has sufficient thickness such that a post-welding grinding operation to size the turbine blade to a desired dimension will not remove the modified MCrAlY coating entirely. The modified MCrAlY coating thus remains on the finished turbine blade tip after grinding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.