Alloy member and method for hardening surface thereof

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United States of America Patent

PATENT NO 11578399
APP PUB NO 20190323114A1
SERIAL NO

16457938

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Abstract

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The present disclosure relates to a titanium or titanium alloy member and to a surface hardening method for the titanium or titanium alloy member. The titanium or titanium alloy member includes a base material of titanium or titanium alloy, and at a surface of the base material, a hardened layer formed by diffusion of oxygen into the surface. The method includes: a heating step of heating the titanium or titanium alloy base material of the member to a predetermined temperature under an inert gas atmosphere; a hardening step of introducing (i) a mixed gas including an inert gas, and (ii) oxygen gas as a hardening treatment gas, to perform hardening treatment of the surface of the base material; and a cooling step of cooling the base material down to room temperature under the inert gas atmosphere.

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Patent Owner(s)

Patent OwnerAddress
CASIO COMPUTER CO LTDJAPAN'S TOKYO SHIBUYA DISTRICT OF THE TOWN 1 CHOME 6 NO 2 TOKYO TOKYO METROPOLIS

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Inoue, Kenichi Hamura, JP 148 1457
Kao, Weipin Kaohsiung, TW 2 1
Kobayashi, Kazuma Fuchu, JP 19 52
Lin, Tienchai Kaohsiung, TW 2 1
Liu, Chinfu Guangdong, CN 2 1
Liu, Wuchien Guangdong, CN 2 1
Nagasawa, Shouta Machida, JP 7 8
Sato, Junichi Hino, JP 316 3631

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