Case-hardened titanium aluminide bearing
US5518820A · kind A · utility
10Cited by
13References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1992 |
| Grant date | May 21, 1996 |
| Priority date | — |
| Expiry date | Jun 16, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A bearing includes a bearing component, such as a bearing race, having a bearing contact surface. A region at the bearing contact surface is made of titanium aluminide, preferably an alpha-2 or gamma titanium aluminide. A case-hardened layer present at the surface of the titanium aluminide region increases the hardness and wear resistance of the titanium aluminide at elevated temperature. The case-hardened layer is preferably formed by diffusing carbon into the surface of the titanium aluminide from a gaseous medium, at elevated temperature land at ambient or reduced pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.