Improving hydrogen storage properties of magnesium based alloys by equal channel angular pressing |
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| Authors: | V.M. Skripnyuk E. Rabkin Y. Estrin R. Lapovok |
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| Affiliation: | 1. Department of Materials Engineering, TECHNION-Israel Institute of Technology, Technion City, 32000 Haifa, Israel;2. ARC Centre of Excellence in Light Metals, Department of Materials Engineering, Monash University, Clayton, VIC 3800 Australia;3. CSIRO Division of Materials Science and Engineering, Clayton South VIC 3169, Australia |
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| Abstract: | Equal channel angular pressing was applied to a commercial magnesium alloy ZK60 in order to improve its hydrogen storage properties. The microstructure refinement and increase in the density of crystal lattice defects caused by equal channel angular pressing increase hydrogen desorption pressure, change the slope of the pressure plateau in pressure-composition isotherms, decrease the pressure hysteresis, and accelerate the hydrogen desorption kinetics. It is argued that a proper design of the defect structure of materials is a key element in the search for economically viable and environmentally acceptable solutions for mobile hydrogen storage based on metal hydrides. |
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| Keywords: | ECAP Magnesium alloy Defect structure Hydrogen storage properties |
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