Treatment of chromium-containing iron alloys

Details Treatment of chromium-containing iron alloys Treatment of chromium-containing iron alloys

1977-02-04

1978-01-31

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

204 56R, 204130, C25D 1100, C25D 500

Patent

active

040714160

ABSTRACT:
A method of providing a hard film on stainless steel comprising treating the stainless steel in an aqueous solution of chromic and sulfuric acids to provide a film and then treating the metal containing the film in an aqueous solution of a water-soluble silicate for a period of time sufficient to harden the film.

REFERENCES:
patent: 2312066 (1939-11-01), Batcheller
patent: 2746915 (1956-05-01), Giesker et al.
patent: 3210220 (1965-10-01), Cleg et al.
patent: 3437532 (1969-04-01), Helgert et al.
patent: 3755117 (1973-08-01), Hart
patent: 3804730 (1974-04-01), Evans et al.
patent: 3832292 (1974-08-01), Sutton et al.
patent: 3850767 (1974-11-01), Skedgell et al.

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