Abstract
In this paper, the oxidation process of high-chromium steel under different heating conditions in dry air is analyzed. The results show that there is a special "weight gain platform" in the oxidation kinetics curve of high-chromium steel. During the isothermal oxidation process, Fe oxides will preferentially grow near the carbide grain boundaries and ultimately diffuse to the surface of the high-chromium steel. In addition, during oxidation, No oxide is formed near the carbide grain boundaries. Based on these results, a pre-oxidation scheme was proposed and shown to improve the oxidation resistance of high-chromium steel by 40% in water cycle oxidation.
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