Abstract
Auger electron spectroscopy was used to study the oxidation behavior of pure chromium in the temperature range 270–490°C for exposures ranging from 1 h to more than 100 h in air. Regression analysis indicated that the oxide thickness on mechanically polished bulk chromium samples increased logarithmically with time, although some spallation was observed at the highest temperature. Oxidation of mechanically polished samples was slower than that for electropolished bulk chromium or that for chromium films on glass substrates. Possible factors responsible for the slower logarithmic growth rate of the oxide on the mechanically polished samples are discussed.
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