Method for passivating stainless steel surfaces and product ther

Details Method for passivating stainless steel surfaces and product ther Method for passivating stainless steel surfaces and product ther

1984-04-10

1985-05-21

Silverberg, Sam

Metal treatment

Compositions

Heat treating

148 315, C23F 704

Patent

active

045184402

ABSTRACT:
Passivated (corrosion resistant) stainless steel surfaces for spinnerets, pack parts, filter media, meter pumps, transfer lines, and the like are achieved by oxidizing the surface in an oxidative atmosphere and subsequently soaking the part in a dilute mineral acid solution.

REFERENCES:
patent: 1817174 (1931-08-01), Brock
patent: 2175771 (1939-10-01), Giles
patent: 2473456 (1949-06-01), Thurber
patent: 2890974 (1959-06-01), Carrigan
The Electrolytical and Chemical Polishing of Metals, pp. 108-109, 1959, Tegart.
Trans. Electrochem. Soc., vol. 89, pp. 167-194, 1946, Mahla and Nielsen.

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