Abstract Binary Ni-Cr alloys containing 5–30 wt% Cr were oxidized in Ar-20CO 2 -20H 2 O gas at 650 °C. Weight gain kinetics for alloys reacted with electropolished surfaces generally increased with increasing Cr content up to 25 wt%. All alloys underwent both internal oxidation and outer NiO formation. The NiO developed as separated, isolated growths on all alloys. Internal oxide zones on high chromium alloys underwent buckling. Weight gain and internal oxidation rates were slower than in dry Ar-20CO 2 . These differences are discussed in terms of altered diffusion processes in NiO in the presence of H 2 O, and displacement of metal from the internal oxidation zone.

中文翻译：

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650°C CO 2 气体中水蒸气对镍铬合金腐蚀的影响

摘要 在 650 °C 的 Ar-20CO 2 -20H 2 O 气体中氧化含 5-30 wt% Cr 的二元 Ni-Cr 合金。与电解抛光表面反应的合金的增重动力学通常随着 Cr 含量增加至 25 wt% 而增加。所有合金都经历了内部氧化和外部 NiO 形成。NiO 在所有合金上都以分离的、孤立的生长形式发展。高铬合金上的内部氧化区发生屈曲。重量增加和内部氧化速率比干燥的 Ar-20CO 2 慢。这些差异是根据在 H 2 O 存在下 NiO 中改变的扩散过程以及金属从内部氧化区的置换来讨论的。