Abstract The effect of Cr addition on the oxidation behaviour of multiphase Mo–28Ti–14Si–6C–6B (at. %) alloy composed of Mo solid solution, Mo5SiB2, Ti5Si3, and TiC phases was investigated. Replacement of 10 at. % Cr for Mo hardly changed the microstructure of the alloy and significantly enhanced its oxidation resistance at 800 °C. At 1100 °C, the Cr-added MoSiBTiC alloy showed less weight loss than the Cr-free base alloy. However, Cr addition had little effect on the substrate reduction, particularly for longer oxidation periods, due to the high volatility of Cr oxide at higher temperatures.

中文翻译：

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添加Cr对含Ti5Si3MoSiBTiC合金组织和抗氧化性能的影响

摘要 研究了添加 Cr 对由 Mo 固溶体、Mo5SiB2、Ti5Si3 和 TiC 相组成的多相 Mo-28Ti-14Si-6C-6B (at. %) 合金氧化行为的影响。更换 10 at。% Cr for Mo 几乎没有改变合金的微观结构，并显着提高了其在 800 °C 下的抗氧化性。在 1100 °C 时，添加 Cr 的 MoSiBTiC 合金的重量损失小于无 Cr 基合金。然而，由于 Cr 氧化物在较高温度下的高挥发性，添加 Cr 对基材还原几乎没有影响，特别是对于较长的氧化期。