La(FexAl1−x)13合金的热力学研究

Xu Xiuguang, Li Guangqiang, Yu Hualong, Wang Changzhen
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引用次数: 5

摘要

制备了具有NaZn13型立方结构的因瓦合金La(FexAlx−1)13。以CaF2单晶为固体电解质,在983–1085K的温度范围内,用e.m.f.法测定了La(FexAl1−x)13合金中镧的活度和相对偏摩尔吉布斯自由能。用差热分析法测定了两种La(Fex Al1−y)13合金的熔点和相变温度。使用高温微量热量计在416–610 K的温度范围内测量平均摩尔热容。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Thermodynamic studies of La(FexAl1−x)13 alloys

The Invar alloy La(FexAlx−1)13 with NaZn13-type cubic structure was prepared. Using single crystals of CaF2 as solid electrolyte, the activity and the relative partial molar Gibbs free energy of lanthanum in La(FexAl1−x)13 alloys were determined by the e.m.f. method over the temperature range 983–1085 K. The melting point and the phase transition temperature of two La(FexAl1−x)13 alloys were measured by differential thermal analysis. The average molar heat capacity was measured using a high temperature microcalorimeter in the temperature range 416–610 K.

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