Method of forming chromate conversion coatings on aluminum surfaces and the coating formed thereby
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United States of America Patent
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Jul 30, 1985
Grant Date -
N/A
app pub date -
Apr 11, 1983
filing date -
Apr 11, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for forming a chromate conversion coating on aluminum surfaces is described in which an aluminum surface is immersed in an aqueous acidic solution containing hexavalent chromium and the aluminum surface and the solution are subjected to ultrasonic energy thus reducing the need for including environmentally harmful accelerator components in said solution.
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