Case hardening titanium and its alloys

Details Case hardening titanium and its alloys Case hardening titanium and its alloys

C - Chemistry, Metallurgy

22

F

C22F 1/18 (2006.01) C22F 1/02 (2006.01) C23C 8/06 (2006.01)

Patent

CA 2673897

An article of titanium or a titanium-based alloy is case hardened by heat treatment at a temperate of 750°C to 850°C and at a pressure in the order of atmospheric pressure in a diffusion atmosphere. The diffusion atmosphere comprises a carrier gas such as argon which does not react chemically with the article the said temperature range and carbon monoxide. The concentration of carbon monoxide in the oxygen diffusion atmosphere is in the range of 20 volumes per million to 400 volumes per million.

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