10 Nanocrystalline Mg87Ni3Al3Mm7 hydrides were produced by reactive mechanical milling (RMM) under hydrogen atmosphere. Milling first under argon, and then under hydrogen atmosphere was also carried out in order to study the effect of the gas atmosphere on the microstructure of the products of milling as well as on their hydriding properties. In both cases, the main product of the milling proce...
