首页|Tailoring the micro structure of Mg-Al-Sn-RE alloy via friction stir processing and the impact on its electrochemical discharge behaviour as the anode for Mg-air battery
Tailoring the micro structure of Mg-Al-Sn-RE alloy via friction stir processing and the impact on its electrochemical discharge behaviour as the anode for Mg-air battery
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Constructing the magnesium alloy with fine grains,low density of dislocations,and weak crystal orientation is of crucial importance to en-hance its comprehensive performance as the anode for Mg-air battery.However,this unique microstructure can hardly be achieved with conven-tional plastic deformation such as rolling or extrusion.Herein,we tailor the microstructure of Mg-Al-Sn-RE alloy by using the friction stir pro-cessing,which obviously refines the grains without increasing dislocation density or strengthening crystal orientation.The Mg-air battery with the processed Mg-Al-Sn-RE alloy as the anode exhibits higher discharge voltages and capacities than that employing the untreated anode.Fur-thermore,the impact of friction stir processing on the electrochemical discharge behaviour of Mg-Al-Sn-RE anode and the corresponding mech-anism are also analysed according to microstructure characterization and electrochemical response.
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