Erosion and corrosion resistant coatings for exhaust gas recirculation based gas turbines
US9365932B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2012 |
| Grant date | Jun 14, 2016 |
| Priority date | — |
| Expiry date | Apr 16, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12611
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A compressor blade for use in a compressor section of a gas turbine engine, comprising: a martensitic stainless steel compressor blade and an abrasive coating having an anodic component. The compressor blade has a blade portion, a dovetail portion and a platform portion intermediate the blade portion and the dovetail portion, the blade portion terminating in a tip opposite the dovetail portion. A cobalt-based coating overlies at least the blade portion of the compressor blade. The cobalt-based coating comprises a cobalt based material that includes precipitates of tungsten carbide that provide erosion resistance and particles of a sacrificial metal-based material distributed through the cobalt-based coating that provide galvanic corrosion resistance to the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.