The Compactibility of Unsaturated Titanium Hydride Powders

In this study, the effects of phase composition and hydrogen content on the compactibility of the titanium hydride powders are investigated. The crushing strength and the XRD patterns were performed. From the results of the green density, it is clear that the compressibility of the unsaturated hydride titanium powder is higher than that of TiH2. The results of the compression tests indicate that the crushing strength of unsaturated hydride titanium powder is markedly higher than that of the TiH2 and pure Ti. The relative mass fraction of each phase of the unsaturated hydride titanium powder was analyzed by Rietveld refinement of the XRD patterns. The phase composition with high compactibility of the unsaturated hydride titanium powder contains a lot of TiH1.5 and a small amount of α-Ti and TiH. There is a suitable range for each phase: TiH1.5 (70-73 wt.%), α-Ti (13-18 wt.%) and TiH (11-15 wt.%).