中文摘要：

以Mg粉、Ni粉和NdNi合金粉为原料，采用放电等离子烧结（SPS）技术制备了Mg2．0-xNdxNi（x=0．1，0．2）储氢合金。结果表明，烧结温度对合金结构和性能有显著影响，在430℃烧结时，Mg与Ni为部分反应生成少量的Mg2Ni合金相，NdNi基本没有参加反应，在450℃烧结时合金的相组成为Mg2Ni、Nd2Ni7和Ni。低温烧结时主要为固相烧结，合金化程度低，Mg2Ni的生成量少；高温烧结主要为液相烧结，Mg2Ni的生成量高。SPS制备的储氢合金具有良好的活化性能和动力学性能，但吸氢量较低。

英文摘要：

Mg2.0-xNdxNi （x =0.1, 0.2） hydrogen storage alloys were prepared from Mg powder, Ni powder and NdNi powder by Spark Plasma Sintering （SPS）. The results show that the sintering temperature has remarkable effect on the structure and properties of the alloys. Mg2 Ni alloy is synthesized incompletely from Mg and Ni without NdNi reaction at 430 ℃. The alloys sintered at 450 ℃ present multiphase structures involving Mg2Ni, Nd2Ni7, and Ni phases. SPS low temperature sintering is a solid-phase sintering process, and the degree of alloying and the production of Mg2Ni is low; the high temperature sintering is a liquid-phase sintering process, and the production of Mg2Ni is high. The alloys prepared by SPS have good activation and kinetic properties, but low hydrogen capacity.