Process of surface hardening for titanium alloy by molten salt c

Details Process of surface hardening for titanium alloy by molten salt c Process of surface hardening for titanium alloy by molten salt c

1993-10-21

1995-04-11

Wyszomierski, George

Metal treatment

Process of modifying or maintaining internal physical...

Carburizing or nitriding using externally supplied carbon or...

148237, 205322, 427431, C23C 844

Patent

active

054054567

ABSTRACT:
Disclosed is a process of surface hardening for titanium alloys comprising .alpha. phase by carburization in a molten salt which consists of carbonate as the carbon-yielding agent with electrolysis within 790.degree. C. to 930.degree. C. The hardness within the effective carburizing layer is influenced by bath temperature, applied current density and carburizing period. The major hardening effect is due to the formation of solid solution of carbon in .alpha.-Ti.

REFERENCES:
patent: 3553038 (1966-10-01), Ader
patent: 3885059 (1975-05-01), Komatsu et al.
patent: 4686117 (1987-08-01), Arai et al.
patent: 4992309 (1991-02-01), Omori et al.
Refractory Hard Metals, (eds) Schwarzkopf et al, McMillan, N.Y. 1953, pp. 63-64.
Abstract (english): SU-3263663: Priority Date Mar. 24, 1981.

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