Oxidation of Co-10 w/o Cr interrupted by vacuum annealing
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The influence of vacuum annealing treatments on the oxidation rate of Co-10 w/o Cr has been studied at 900°C and 1100°C in 100 Torr oxygen. The oxidation rate posttreatment has been found to decrease markedly with the length of the vacuum annealing period. At 900°C this effect is maintained for all periods of reoxidation studied but at 1100°C the effect of vacuum annealing disappears after a period of slow reoxidation. It is assumed that the decrease of the oxidation rate is due to an increase in the amount of CoCr2O4 in the inner layer.
KeywordsOxidation Oxygen Physical Chemistry Oxidation Rate Annealing Treatment
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