The oxidation behaviour of model alloys Ni-(20, 30)Cr (wt.%) with (0, 1, 5, 15%) Fe was investigated at 800 °C in Ar-20%CO2-20%H2O gas. All 20Cr alloys developed a multilayered scale, and the outer scale layers on alloys containing iron were subject to spallation. However, all 30Cr alloys developed a scale which was predominantly chromia scale and resisted spallation. These effects are discussed in terms of Fe alloying effects on oxide scale development in the presence of water vapour. Differences between scaling behaviour in wet and dry CO2 are shown to be explained by changed oxide transport properties.

中文翻译：

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Fe对Ni-20Cr和Ni-30Cr合金在800℃湿CO2气体中氧化的影响

研究了模型合金 Ni-(20, 30)Cr (wt.%) 与 (0, 1, 5, 15%) Fe 在 800 °C 下在 Ar-20%CO2-20%H2O 气体中的氧化行为。所有 20Cr 合金都形成了多层氧化皮，含铁合金的外氧化皮层会散裂。然而，所有 30Cr 合金都形成了一种氧化皮，主要是氧化铬皮和抗剥落。在存在水蒸气的情况下，根据 Fe 合金化对氧化皮发展的影响来讨论这些影响。湿和干 CO2 结垢行为之间的差异被证明是由改变的氧化物传输特性来解释的。