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To improve lower current efficiency of Mg-based sacrificial anode,a Mg-based sacrificial anode material with yttrium addition was investigated.Its electrochemical properties were evaluated by the galvanostatic method,and its microstructure and constitution were characterized by metallurgical microscope and X-ray diffraction.The results showed that,the addition of yttrium refined dentrite grains,maximized current efficiency,and minimized potential of magnesium sacrificial anode.When 0.1% yttrium was doped,the anode showed the highest current efficiency,62.5%,which improved its current efficiency by 14%.
To improve lower current efficiency of Mg-based sacrificial anode, a Mg-based sacrificial anode material with yttrium addition was investigated. Its electrochemical properties were evaluated by the galvanostatic method, and its microstructure and constitution were characterized by metallurgical microscope and X-ray diffraction The results showed that, the addition of yttrium refined dentrite grains, maximized current efficiency, and minimized potential of magnesium sacrificial anode. Whilst 0.1% yttrium was doped, the anode showed the highest current efficiency, 62.5%, which improved its current efficiency by 14%.