C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
204/96.36
C21D 1/48 (2006.01) C23C 8/36 (2006.01)
Patent
CA 1237380
ABSTRACT OF THE DISCLOSURE A process is disclosed for ion nitriding an article made of aluminum or an aluminum alloy. The article is disposed in a sealed vessel and the oxygen gas in the vessel is removed. The surface of the article is then heated to a prescribed nitriding temperature, and the surface of the article is activated to facili- tate the formation of an aluminum nitride layer by the subsequent nitriding treatment. Thereafter the article is subjected to ion nitriding, thereby forming an aluminum nitride layer having excellent wear resistance and high hardness. This ion nitriding treatment for aluminum material can be carried out at temperatures lower even than a solution treatment temperature of aluminum material.
478394
Arai Tohru
Fujita Hironori
Suzuki Takatoshi
Tachikawa Hideo
Kabushiki Kaisha Toyota Chuo Kenkyusho
Smart & Biggar
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