In-process formation of hard surface layer on Ti/Ti alloy having

Details In-process formation of hard surface layer on Ti/Ti alloy having In-process formation of hard surface layer on Ti/Ti alloy having

1988-09-08

1990-03-13

Roy, Upendra

Metal treatment

Compositions

Heat treating

72 42, 148 19, 148 206, 148133, 148316, 148317, C23C 1110

Patent

active

049080725

ABSTRACT:
A process for producing a titanium material with excellent corrosion resistance, which comprises first applying a degree of cold working of 10% or more of the total working reduction while causing an oil to exist on the surface of the titanium material during cold working thereof and then subjecting the titanium material to in-situ heat treatment at a temperature of 300.degree. C. or higher, thereby forming a layer with excellent corrosion resistance containing at least one of Ti.sub.2 N, TiC and Ti(CN) on the titanium material surface.

REFERENCES:
patent: 3814212 (1974-06-01), Latos
patent: 4055975 (1977-11-01), Serfozo et al.
patent: 4096076 (1978-06-01), Spiegelberg
patent: 4346014 (1982-08-01), Piucci et al.
patent: 4398406 (1983-08-01), Fukuda et al.
patent: 4465524 (1984-08-01), Dearnaley et al.
patent: 4568398 (1986-02-01), Vardiman

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