Titanium resistant to discoloration in atmospheric...

Details Titanium resistant to discoloration in atmospheric... Titanium resistant to discoloration in atmospheric...

2005-03-08

2005-03-08

Koehler, Robert R. (Department: 1775)

Stock material or miscellaneous articles

Composite

Of metal

C148S669000, C148S670000, C148S421000, C205S322000, C205S333000, C420S417000, C428S926000

Reexamination Certificate

active

06863987

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 X1of TiC to a (110) peak intensity X2of titanium is not more than 0.18 and by having an oxide film of a thickness of 12 to 40 nm at its surface.

REFERENCES:
patent: 5554235 (1996-09-01), Noe et al.
patent: 60-238465 (1985-11-01), None
patent: 62-86197 (1987-04-01), None
patent: 62-284056 (1987-12-01), None
patent: 1-234551 (1989-09-01), None
patent: 6-173083 (1994-06-01), None
patent: 2000-1729 (2000-01-01), None

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