Corrosion inhibition of iron and its alloys

Details Corrosion inhibition of iron and its alloys Corrosion inhibition of iron and its alloys

1987-06-05

1988-05-10

Silverberg, Sam

Coating processes

Magnetic base or coating

148 616, 106 1405, 427220, 556 21, 568 9, C25D 0000, B05B 700

Patent

active

047434660

ABSTRACT:
For use in magnetic recording tapes and for other purposes, iron and iron alloy materials are passivated and protected against oxidative corrosion by treatment with a solution of a non-hygroscopic salt of bis(triphenylphosphoranylidene) ammonium cation with an anion such as nitrate or chromate.

REFERENCES:
patent: 2419327 (1947-04-01), Wachter et al.
patent: 4030913 (1977-06-01), Wegener
patent: 4069073 (1978-01-01), Tadokoro et al.
patent: 4360377 (1982-11-01), Steck et al.
patent: 4407901 (1983-10-01), Miyatsuka et al.
patent: 4470844 (1984-09-01), Rademachers et al.
Martinsen et al., Acta Chemica Scandanavica, A31 (1977) pp. 645-650.
Stevens et al., J. Am. Chem. Soc., 1981, vol. 103, pp. 4981-4982.

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