Hydride Metallurgy : Combustion Synthesis of Metal Hydride and Its Physical Property

这种熔炼方法不能生产出蒸气压相差很大的纯合金。此外，熔融法的严重问题是加氢速度很慢，反应温度仍然偏高。还需要对产品进行活化处理。为了解决这些问题，我们提出了利用固体之间的自蔓延高放热现象，在高压下进行燃烧合成。因此，本文对高压氢气气氛下的燃烧合成进行了基础性的研究，即将粉末混合均匀，然后点燃样品的一端。成功地完成了产品的成分控制，没有任何蒸发损失。通过改变原料、压力和温度等操作条件，氢气的储存量和反应速率也得到了显著提高。

The melting method can not produce pure alloy with largely different vapor pressure. In addition, the serious problem of the melting method is that hydrogenation rate is very slow and reaction temperature is still on high side. The activation treatment of the product is also needed. To solve the problems, we proposed the combustion synthesis under high hydrogen pressure by using the self-propagating high exothermic phenomenon between solids. Therefore, the combustion synthesis at high-pressure hydrogen atmosphere was fundamentally studied, in which powders was well mixed, and then one end of the sample was ignited. As a result, the composition control of the product was successfully completed without any evaporation loss. The storage capacity of hydrogen and reaction rate were also considerably improved by changing operating conditions of raw material, pressure and temperature.