Surface oxide layer treatment

Details Surface oxide layer treatment Surface oxide layer treatment

1983-05-13

1985-07-09

Skiff, Peter K.

Metal treatment

Compositions

Heat treating

148 6, 148 315, 4273839, C23C 900

Patent

active

045280436

ABSTRACT:
In Titanium casting the surface of the casting is usually contaminated with a brittle oxide layer which has to be removed. Physical or chemical machining reduces the dimensions of the casting and adds to its cost. Chemical reagents may remove fine surface detail.
In accordance with the invention the oxygen in the oxide layer is removed by contacting the surface of the casting with an oxide scavenge agent, notably Titanium, for a sufficient time and at a sufficient temperature to allow diffusion of the oxygen from the surface into the scavenge agent.

REFERENCES:
patent: 3000755 (1961-09-01), Hanink et al.
patent: 3037883 (1962-06-01), Wachtell et al.
patent: 3556744 (1971-01-01), Berkley et al.
patent: 3640778 (1972-02-01), Winfree et al.
patent: 3903338 (1975-09-01), Cook et al.
patent: 3958047 (1976-05-01), Baldi
patent: 4098450 (1978-07-01), Keller et al.

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