Treatment of turbine blades to increase hardness
US7931446B2 · kind B2 · utility
0Cited by
18References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2007 |
| Grant date | Apr 26, 2011 |
| Priority date | — |
| Expiry date | Jun 26, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Turbine blades, including airfoils, of aviation or industrial gas turbine engines are treated with boron to improve surface hardness and/or durability. Both stainless steel components and titanium components may be treated with boron. Elemental boron is diffused into the surface of the blade or other component, forming FeB and Fe2B in stainless steel components and titanium boride in titanium components. This treatment produces components with increased resistance to erosion caused by airborne particles and pollutants, extending the life of the components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.