The short time oxidation behavior of Co-based alloy at different temperatures was investigated.As showing by the testing results,the oxidation weight gain increases with the increase of temperature and time,and the speed of oxidation weight gain arrives the maximum values at 1100 ℃.CoO forms firstly and then the Cr2O3 and Al2O3 appear on the surface of the alloy when alloy was heated at 900 ℃.Along with the oxidation time extending,the number of Cr2O3 and Al2O3 increases.When the temperature reaches 1000 ℃ ...
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