Method for forming adherent, bright, smooth and hard chromium electrodeposits on stainless steel substrates from high energy efficient chromium baths
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United States of America Patent
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May 12, 1987
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N/A
app pub date -
Oct 15, 1985
filing date -
Oct 15, 1985
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Expired
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Abstract
An activation solution is provided for forming adherent chromium electrodeposits on stainless steel substrates from high energy efficient chromium baths. The activation solution suitably is a mixture of chromium acid, and chloride ion, or a mixture of chloride and bromide ions. A preferred solution contains 0.15M chromic acid and 0.14M chloride ion, or with 0.025M bromide ion, and the stainless steel is anodically etched in the activation solution at about 55.degree. C.
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