Abstract The isothermal oxidation of directionally solidified NiAl-34Cr and NiAl alloys with embedded Cr bar and Mo wire were studied in a thermobalance at 800 °C, 1200 °C and 1300 °C for 50 h (Ar/ 13 vol.% O2). NiAl-Cr showed formation of a continuous Al2O3-Cr2O3 solid solution in the vicinity of the interface of NiAl and Cr in which the composition changed from almost pure Al2O3 near the metal matrix to almost pure Cr2O3 near the gas surface. DS NiAl-34Cr showed more spallation compared to NiAl-Cr. In case of NiAl-Mo, a weight loss was observed due to formation of volatile oxides.

中文翻译：

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嵌入Cr和Mo的NiAl金属间化合物的氧化行为

摘要 在热天平中研究了定向凝固的 NiAl-34Cr 和嵌入 Cr 棒和 Mo 丝的 NiAl 合金在 800 °C、1200 °C 和 1300 °C 下等温氧化 50 小时（Ar/13 vol.% O2）。NiAl-Cr 表明在 NiAl 和 Cr 的界面附近形成了连续的 Al2O3-Cr2O3 固溶体，其中成分从金属基体附近的几乎纯的 Al2O3 变为气体表面附近的几乎纯的 Cr2O3。与 NiAl-Cr 相比，DS NiAl-34Cr 显示出更多的散裂。在 NiAl-Mo 的情况下，由于挥发性氧化物的形成，观察到重量损失。