Wear-resistant titanium or titanium-alloy member and a method for manufacturing the same
US4902359A · kind A · utility
49Cited by
4References
15Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Sep 6, 1988 |
| Grant date | Feb 20, 1990 |
| Priority date | — |
| Expiry date | Sep 6, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S148/903
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A wear-resistant titanium or titanium-alloy member adapted for use as a poppet valve, rocker arm, etc., of an internal combustion engine, which requires lightness in weight and good wear resistance, and a method for manufacturing the member. The surface of the titanium or titanium-alloy member is given a Vickers hardness number of 390 to 1,200, preferably 400 to 800, and a hardened layer depth of 0.1 to 2.0 mm, preferably 0.3 to 1.5 mm, by being melt-hardened while being supplied with hardening elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.