Friction piece, mechanical system comprising such a friction piece and method of implementation
US11236861B2 · kind B2 · utility
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1References
9Claims
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Assignee
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Key dates
| Filing date | Dec 4, 2017 |
| Grant date | Feb 1, 2022 |
| Priority date | — |
| Expiry date | Dec 4, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2223/60
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention concerns a friction piece (10) suitable for operating in a lubricated medium at a temperature higher than 200° C. The piece (10) comprises a metal surface (12) and an external coating (14) composed of tungsten carbide doped with nitrogen WC(N) with an atomic ratio of nitrogen between 5 and 12%. The invention also relates to a mechanical system (1) comprising such a piece (10). The invention also relates to a method for implementing such a piece (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.