Effect of misch-metal substitution on structure and hydrogen desorption characteristics of Ti0.16Zr0.05Cr0.22V0.57 alloy

Abstract

Misch-metal (Mm) substituted (Ti 0.16 Zr 0.05 Cr 0.22 V 0.57 ) 1-x Mm x (x = 0.0, 0.03, 0.05, 0.10) alloys were synthesized by arc-melting. Phase analysis and microstructural studies were carried out using powder X-ray diffraction (XRD) and transmission electron microscopy (TEM) techniques. The proportion of phases was estimated by Reitveld analysis of the powder X-ray diffraction data. The addition of Mm results in a decrease in the hydrogen storage capacity as well as a change in structure. The DTA analysis shows two endothermic peaks from ZrCr 2 H 4 and BCC hydride.