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Environmental Effects on Metallic Corrosion Products Formed in Short- term Atmospheric Exposures.

Flinn-DR; Cramer-SD; Carter-JP; Et Al
Ch in Mat Degrad by Acid Rain Am Chem Soc 1986 :119-151
The Bureau of Mines has measured short- and long-term atmospheric corrosion damage on five metals and two metal-coated steel products at four sites in the east and northeast United States as part of the National Acid Precipitation Assessment program to evaluate the effects of acid deposition on materials. The composition of the corrosion product on carbon steel, weathering steel, copper, zinc, and galvinized steel is relatively unchanged in 1- and 3-month exposures over a wide variety of environmental conditions. Spalling and runoff losses are observed on all metals. Massive reorganization of the corrosion film by a mechanism of cyclic dissolution and precipitation was observed on carbon steel, cor-ten a, zinc, and galvanized steel. Loss of corrosion product from zinc in runoff was a function of both dissolution in rain water and neutralization by hydrogen ion loading, with dissolution contributing to the greater portion of the loss.
Publication Date
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NTIS Accession No.
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Identifying No.
OP 129-86
NIOSH Division
Source Name
Ch. in Mat. Degrad. by Acid Rain, Am. Chem. Soc., 1986, PP. 119-151