Titanium resistant to discoloration in atmospheric environment and process of production of same
US6863987B2 · kind B2 · utility
6Cited by
1References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2001 |
| Grant date | Mar 8, 2005 |
| Priority date | — |
| Expiry date | Nov 27, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/926
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Titanium resistant to discoloration in an atmospheric environment characterized by having an average carbon concentration of 14 at % or less in a range to a depth of 100 nm from the surface and having an oxide film of a thickness of 12 to 40 nm at its surface. Titanium resistant to discoloration in an atmospheric environment characterized in that, in X-ray diffraction of its surface, a ratio (X1/X2) of a (200) peak intensity X1 of TiC to a (110) peak intensity X2 of titanium is not more than 0.18 and by having an oxide film of a thickness of 12 to 40 nm at its surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.