Surface treatment for variable geometry turbine
US7647772B2 · kind B2 · utility
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2References
13Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 14, 2006 |
| Grant date | Jan 19, 2010 |
| Priority date | — |
| Expiry date | Mar 14, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/611
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An exemplary vane fronting surface for a variable geometry turbine includes a white layer that comprises nitrides. Such a layer may be formed using gas nitriding. As described, trials demonstrate that such nitriding reduces friction between a vane fronting surface and vanes of a variable geometry turbine. Consequently, nitriding can enhance longevity and controllability of a variable geometry turbine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.