Instantaneous Synthesis of Mg_2NiH_4 alloy

本研究项目启动了直接从压缩混合物中立即合成金属氢化物的研究。在实验中，镁和镍的压缩粉末在加压氢气中加热。产物为纯Mg_<x2>NiH_4。结果表明，与传统的基于铸锭冶金的工艺相比，从节能和省时的角度来看，该工艺是非常有吸引力的。此外，通过测量热导率的变化和观察最终产物的形貌，研究了反应机理。

This research project initiates the study on istantaneous synthesis of metallic hydride directly from compressed mixture. In the experiments, compressed powders of magnesium and nickel were heated at pressurized hydrogen. The product was successfully pure Mg_<x2>NiH_4. The results concluded that the process proposed is very attractive from viewpoints of energy-and time-saving, in comparison to a conventional process based on ingot metallurgy. Moreover, the reaction mechanism was studied by measuring changes of thermal conductivity and by observing morphology of the end product.