Method of treating the surface of iron alloy materials

Details Method of treating the surface of iron alloy materials Method of treating the surface of iron alloy materials

C - Chemistry, Metallurgy

23

C

204/83, 117/91

C23C 12/00 (2006.01) C23C 16/34 (2006.01) C23C 16/36 (2006.01)

Patent

CA 1247468

ABSTRACT OF THE DISCLOSURE A layer of a nitride or carbonitride containing at least one of chromium, Group Va elements, titanium and zirconium is formed on the surface of an iron alloy mate- rial which has been nitrided. The layer is formed by heating the iron alloy material at a temperature not ex- ceeding 700°C with a material containing at least one of chromium, Group Va elements, titanium and zirconium and a treating agent. It is a dense layer bonded tightly to the iron alloy material. As a low temperature not exceed- ing 700°C is employed, no large amount of heat energy is required, nor is any thermal strain produced in the iron alloy material.

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