Structure, microstructure and hydrogen storage properties of melt-spun V55Ti21Cr17Fe7 and V55Ti21Mn17Fe7

TL;DR

This study investigates the structure, microstructure, and hydrogen storage capabilities of melt-spun V55Ti21Cr17Fe7 and V55Ti21Mn17Fe7 alloys, analyzing their performance and microstructural changes before and after hydrogen absorption.

Contribution

It provides new insights into the hydrogen storage properties and microstructural evolution of these specific melt-spun alloys.

Findings

Both alloys exhibit notable hydrogen absorption kinetics.

Microstructure influences hydrogen storage performance.

Structural analysis reveals changes post hydrogen desorption.

Abstract

The hydrogen sorption performance of V55Ti21Cr17Fe7 and V55Ti21Mn17Fe7 alloys and their ribbons were evaluated by pressure composition temperature tests. Their hydrogen absorption kinetic properties were studied through hydrogen absorption curves. The crystallographic structures and microstructure of these alloys and ribbons before hydrogen absorption and after hydrogen desorption PCT tests were identified by Xray diffraction and Scanning electron microscopy analysis, respectively. Hydrogen storage characteristics of such materials were investigated by volumetric method using Sieverts type apparatus and gravimetric method with suspension balance.