Hydrogenation properties of Mg-based composites prepared by reactive mechanical alloying

A nanocrystalline composite of Mg–LaNi3–Cu has been prepared by reactive mechanical alloying of Mg, Cu and LaNi3 powders after 60 h ball-milling under a hydrogen atmosphere. This composite desorbed 1.06 mass% of hydrogen at 533 K under a hydrogen pressure of 0.1 MPa. Addition of Cu promotes the hydrogen desorption.