丙炔醇对AZ31镁合金阳极电化学行为的影响
Influence of Propargyl Alcohol on Electrochemical Behavior of AZ31 Magnesium Alloy Anode
摘 要
采用电化学方法研究了在中性0.25mol?L-1 KCl溶液中,添加剂丙炔醇对AZ31镁合金阳极电化学行为的影响。结果表明,丙炔醇能大幅度抑制AZ31镁合金的腐蚀,并能提高AZ31镁合金的活化程度。当丙炔醇浓度为1.0%时,AZ31镁合金的缓蚀率为45.6%;表面均匀,活化程度高;在-1.40V(相对SCE,下同)时AZ31镁合金的电流密度为7.97mA?cm-2,开路电位Eocp负移程度最大(-1.56V),活化电位Eact负移程度也最大(-1.54V)。
KCl溶液
丙炔醇
电化学行为
magnesium alloy AZ31
KCl solution
propargyl alcohol
electrochemical behavior
Abstract
To improve the activation properties and reduce the corrosion rate of AZ31 magnesium alloy,theinfluences of propargyl alcohol on the electrochemical behaviors of AZ31magnesium alloy in KCl solution were studiedby electrochemical methods.The results show that propargyl alcohol not only can reduce the corrosion rate(inhibitionefficiency was 45.6 %),but also can improve the activation properties of AZ31 magnesium alloy,when 0.5 %propargyl alcohol was added into 0.25 mol?L-1 KCl.The current density of AZ31reached 7.97 mA?cm-2 at-1.40V(vs.SCE,the same below),Eocpwas-1.56Vand Eactwas-1.54V.
中图分类号 TG174
所属栏目 试验研究
基金项目 材料腐蚀与防护四川省重点实验室科研基金资助项目(2010CL03)
收稿日期 2013/1/15
修改稿日期
网络出版日期
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备注余祖孝,教授,博士,
引用该论文: YU Zu-xiao. Influence of Propargyl Alcohol on Electrochemical Behavior of AZ31 Magnesium Alloy Anode[J]. Corrosion & Protection, 2013, 34(11): 989
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【2】Hasvold,Lian T,Haakaas E,et al.Clipper:a long-range,autonomous underwater vehicle using magnesi-um fuel and oxygen from the sea[J].Power Sources,2004,136:232-239.
【3】马正青,黎文献,余琨,等.海水介质中高活性镁合金负极的电化学性能[J].材料保护,2002,35(12):16-18.
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【6】李海洪,赵永韬,郭兴蓬.丙炔醇对Q235钢在硫酸中的缓蚀作用[J].腐蚀与防护,2007,28(3):113-115.
【7】曹楚南,张鉴清.电化学阻抗谱导论[M].北京:科学出版社,2002:24-32.
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