Synthesis, phase transformation, and hydrogen storage properties of ball-milled TiV0.9Mn1.1

The milling of body centered cubic (BCC) Laves phase-related alloy of composition TiV0.9Mn1.1 was performed using a planetary mill under inert atmosphere. Starting materials were arc-melted alloys and elements mixtures. The arc-melted alloy consisted of two phases: the C14 Laves phase and a BCC solid solution. It was found that milling of the arc-melted alloy resulted in the disappearance of the C14 Laves phase and the formation of a face centered cubic (FCC) solid solution phase in addition to the BCC solid solution. Milling the pure elements also produced a mixture of FCC and BCC solid solution phases. Extensive milling resulted in a total loss of hydrogen capacity.