Structural and hydriding properties of composite Mg-ZrFe1.4Cr0.6

The composite system Mg-ZrFe1.4Cr0.6 was synthesized by mechanical grinding of Mg mixed with various amounts of ZrFe1.4Cr0.6. The hydrogenation perfor mance of Mg in the composite system was markedly enhanced, especially for M g-40 wt.% ZrFe1.4Cr0.6. SEM, TEM, EDS and X-ray diffraction were used to ch aracterize the composite. The full exploitation of the catalytic function o f ZrFe1.4Cr0.6 and the nanostructure of Mg were found to be the main reason s for the markedly improved hydriding kinetics of the composite. (C) 2001 A cta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.