Use of bicarbonates and carbonates in metal cleaning formulations to inhibit flash rusting
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United States of America Patent
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Dec 29, 1998
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Feb 6, 1996
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Sep 23, 1994
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Abstract
Prevention of flash rusting of iron-containing substrates is achieved by contacting the substrates with aqueous solutions containing carbonate and/or bicarbonate salts. The treatment process can be effected during cleaning of the substrates with an aqueous alkaline cleaner or during a post cleaning step such as during rinsing of the substrates subsequent to cleaning.
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