Abstract The high temperature oxidation behavior of two highly alloyed refractory austenitic steels is studied at 1000 °C under air. Both short-term oxidation kinetics and long-term oxidation products are investigated. Structural, elemental and morphological analyses are coupled to characterize the oxide phases’ formation. Chromia and spinel are the main phases for both samples although they suffer important descaling after 4 weeks oxidation, but alloying elements are responsible for the formation of many other oxides. Microstructures are compared and discussed. New Raman spectra are reported for manganese chromite spinels. Their assignments are provided and discussed at the light of the proposed cationic distribution.

中文翻译：

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耐火钢高温氧化特性

摘要 研究了两种高合金难熔奥氏体钢在 1000 °C 空气中的高温氧化行为。研究了短期氧化动力学和长期氧化产物。结合结构、元素和形态分析来表征氧化物相的形成。铬和尖晶石是这两个样品的主要相，尽管它们在氧化 4 周后会发生重要的除垢，但合金元素是形成许多其他氧化物的原因。对微观结构进行了比较和讨论。报告了锰铬尖晶石的新拉曼光谱。根据提议的阳离子分布提供和讨论它们的分配。