Abstract Isothermal oxidation kinetics of pure chromium at 950–1200 °C in purely oxidizing (Ar-20%O2), purely nitriding (N2-5%H2), and oxidizing-nitriding (synthetic air, N2-20%O2) atmospheres were studied. Effects of factors such as oxide volatilization, multiple mass-gains, and nitridation on oxidation kinetics of chromium were investigated using thermal analysis, acoustic emission analysis, and electron microscopy. Results obtained in single oxidant atmospheres compared to those obtained in air clearly showed the transparency of chromia against nitrogen in air. The abrupt mass gain steps observed during isothermal oxidation were appeared due to the local oxide scale failure resulting from growth stresses in the thermally grown chromia scale.

中文翻译：

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影响纯铬在空气中等温氧化的因素

摘要 纯铬在纯氧化 (Ar-20%O2)、纯氮化 (N2-5%H2) 和氧化-氮化（合成空气，N2-20%O2）气氛中，在 950–1200 °C 下的等温氧化动力学为学习了。使用热分析、声发射分析和电子显微镜研究了氧化物挥发、多重质量增益和氮化等因素对铬氧化动力学的影响。与在空气中获得的结果相比，在单一氧化剂气氛中获得的结果清楚地表明氧化铬对空气中的氮气具有透明度。在等温氧化过程中观察到的突然质量增加是由于热生长氧化铬氧化皮中的生长应力导致的局部氧化皮失效。