Method of producing an adherent, smooth deposit of chromium on a nodular iron substrate
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United States of America Patent
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Mar 15, 1988
Grant Date -
N/A
app pub date -
Jan 12, 1986
filing date -
Jan 12, 1986
priority date (Note) -
Expired
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Abstract
An adherent, smooth electrodeposit of chromium is produced on a nodular cast iron substrate from a chromium plating bath. The desired deposit is provided herein by activating the substrate, subjecting the activated substrate to an ultrasonic treatment, and thereafter plating chromium from a chromium plating bath. The method is particularly effective for electrodeposition of chromium on such substrates from commercial high energy efficient chromium electroplating baths, where ordinarily only roughened deposits are obtained.
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