Abstract

In the present work, oxidation behavior of NiCrAl alloys with La additive and La and Y additives have been investigated at 900, 1000, and 1100°C. Oxidation kinetics has been studied using thermogravimetric analysis. The phase constitutions of the surface were determined by X-ray diffraction. Scanning electron microscopy with energy-dispersive X-ray spectroscopy has been used to observe the microstructural evolution and compositions. Mechanism for the effect of multi rare-earth additives to NiCrAl alloys has been proposed.

中文翻译：

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La和Y添加剂对NiCrAl合金的氧化行为：动力学和微观观察

摘要

在目前的工作中，已经研究了在900、1000和1100°C下使用La添加剂和La和Y添加剂的NiCrAl合金的氧化行为。已经使用热重分析法研究了氧化动力学。通过X射线衍射确定表面的相组成。具有能量色散X射线光谱学的扫描电子显微镜已用于观察显微组织的演变和组成。已经提出了多种稀土添加剂对NiCrAl合金的作用机理。