Effects of Quenching Rate on Microstructure and Electrochemical Performance of Rare Earth Mg-based Alloy AITranslate

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Chinese Library Classification Number:TG146.45[金属学及工艺—金属材料]

Citation Information:

Mg0.25Ni3.5Co0.2 alloy was prepared by melt rapid quenching technology. The microstructure of the alloy was analyzed by SEM and XRD, and its electrochemical performance was tested with electrochemical method. The results show that the quenched alloy has multiphase structure,increased main diffraction peak FWHM and micro-strain, obviously refined grains and larger area of columnar crystal zone. With the increase of quenching rate, discharge capacity of the alloy decreases, medium potential of discharge plateau and open-circuit potential positively shift, and cycling stability is enhanced.