The cooperative effect of calcium ions and tartrate ions on the corrosion inhibition of pure aluminum in an alkaline solution
The cooperative effect of calcium ions and tartrate ions on the corrosion inhibition of pure aluminum in an alkaline solution
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DOI：
10.1016/s0254-0584(02)00006-8
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发表时间：
2003-01
影响因子：
4.6
通讯作者：
Haifeng Shao;J. M. Wang;Z. Zhang;Jiqiang Zhang;C. Cao
中科院分区：
文献类型：
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作者：
Haifeng Shao;J. M. Wang;Z. Zhang;Jiqiang Zhang;C. Cao
采用氢收集、电化学方法和XPS研究了钙离子和酒石酸根离子对纯铝在碱性溶液中的协同缓蚀作用。电化学实验结果表明，酒石酸根离子的加入增强了钙离子的缓蚀作用，而酒石酸根离子本身只有很小的缓蚀作用。通过XPS分析，发现钙离子和酒石酸根离子对铝表面膜的形成没有贡献。这一事实表明，这两个离子作为界面抑制剂，而不是相间的。这两种离子的协同作用可能是由于形成络合物，使Ca 2+更容易吸附在铝表面。
The cooperative effect of calcium ion and tartrate ion on the corrosion inhibition of pure aluminum in an alkaline solution was investigated by hydrogen collection, electrochemical methods and XPS. The results of electrochemical experiments showed that the inhibition of calcium ion was enhanced by the addition of tartrate ion, while tartrate ion itself has only a little inhibition effect. Analysis by XPS, it was found that calcium and tartrate ions did not contribute to the formation of the surface film on aluminum. This fact indicates that these two ions act as interface inhibitor rather than inter-phase one. The cooperative effect of the two ions might be due to formation of complex, which makes it easier for Ca2+to adsorb on the aluminum surface.