Metal treatment – Compositions – Heat treating
Patent
1981-10-21
1983-05-31
Lewis, Michael L.
Metal treatment
Compositions
Heat treating
376417, 428632, 428649, 428656, 428658, B32B 1500, B32B 1520
Patent
active
043859437
ABSTRACT:
The present invention is directed to the protecting of uranium and uranium alloy articles from corrosion by providing the surfaces of the articles with a layer of an ion-plated metal selected from aluminum and zinc to a thickness of at least 60 microinches and then converting at least the outer surface of the ion-plated layer of aluminum or zinc to aluminum chromate or zinc chromate. This conversion of the aluminum or zinc to the chromate form considerably enhances the corrosion resistance of the ion plating so as to effectively protect the coated article from corrosion.
REFERENCES:
patent: 2872401 (1959-02-01), Wigner
patent: 2969309 (1961-01-01), Finniston et al.
patent: 4137370 (1979-01-01), Fujishiro et al.
patent: 4208453 (1980-06-01), Baldi
Lyman, T., et al.; Ed., Metals Handbook vol. 2, 8th Edition, pp. 547, 628, TA472 A3, (1964).
Wiederholt, The Chemical Surface Treatment of Metal, Robert Draper Ltd., pp. 145-211, (1965).
Bell Richard T.
Hovis, Jr. Victor M.
Kollie Thomas G.
Pullen William C.
Besha Richard G.
Hamel Stephen D.
Larcher Earl L.
Lewis Michael L.
The United States of America as represented by the United States
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