中文摘要：

Er-Ni合金可被用作低温制冷机的磁性蓄冷材料,鉴于氢化反应会使其材料微结构和热物性发生显著变化进而影响制冷机性能,拟对磁性蓄冷材料ErNi的氢化反应特性及其产物组分进行实验研究和分析。着重对ErNi氢化反应的活化特性,反应温度与反应时间的关系,吸氢量与反应时间的关系等进行了探索。测定了ErNi氢化反应的p-c-T曲线（离解压-组成-温度特性曲线）,并利用XRD分析方法测试了氢化产物的构成和性质,旨在从反应过程和反应产物两方面综合探索ErNi的氢化反应特性。

英文摘要：

The hydrogenation reaction of Er-Ni alloy can lead to notable change in microstructure and thermophysical properties, and then affect the performance of a cryocooler when used as its magnetic regenerative material. The hydrogenation reaction characteristics and the properties of its hydrides for the magnetic regenerative material ErNi were investigated in terms of activation characteristics, reaction temperature and reaction extent and their dpendance on reaction time. In the investigation, the p-c-T （Pressure-Concentration-Temperature） curves under different reaction temperature were acquired and the hydrides of ErNi were then analyzed based on the XRD results.