Development of Thermodynamic Database of Ti-V-based Hydrogen Storage Alloys

摘要

In this work,Ti-V-based hydrogen storage alloys have been studied because of their high hydrogen absorption/desorption capacities and good activated properties.Experimental data of phase equlibria and thermodynamic assessments of the sub-binary/ternary systems in the Ti-V-based multi-component systems are reviewed in reported literature.Based on the measured phase diagram data and thermochemica information,thermodynamic parameters formulating the Gibbs energies of various phases in some sub-binary/ternary systems of Ti-V-based multi-component alloys are assessed using the CALPHAD method.A set-consistent thermodynamic database of the Ti-V-based multi-component system is developed,which is helpful to study the relations between alloy compositions,microstructure and hydrogen storage properties in order to design novel Ti-V-based hydrogen storage alloys.