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研究了Sn元素对AZ61镁合金阳极材料显微组织及其在3.5%的氯化钠溶液中的电化学性能和腐蚀速率.结果表明:Sn元素的加入抑制了β相的析出,生成了新的第二相,数量随着Sn含量的增加而增多;Sn元素的加入提高了AZ61镁合金阳极活性,改善了镁合金的电化学性能,随着Sn含量的增加,合金的自腐蚀电位负移,腐蚀速率稍有增加,恒电流放电电位负移,当Sn含量为3%时,AZ61-Sn镁合金阳极材料电化学综合性能明显优于AP65镁合金.
The effect of Sn on the microstructure of AZ61 magnesium alloy anode material and its electrochemical performance and corrosion rate in 3.5% sodium chloride solution was studied.The results show that addition of Sn element inhibits the precipitation of β phase and produces new The amount of second phase increased with the increase of Sn content. The addition of Sn element increased the anode activity of AZ61 magnesium alloy and improved the electrochemical performance of magnesium alloy. With the increase of Sn content, the self-corrosion potential of alloy was negatively shifted, The corrosion rate increases slightly and the galvanostatic discharge potential shifts negatively. When Sn content is 3%, the electrochemical properties of AZ61-Sn magnesium alloy anode are better than that of AP65 magnesium alloy.