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| 纳米锌镀层在硫酸中的腐蚀和缓蚀机理 | |
| 引用本文： | 颜肖慈,文汉,余娜,肖旺,罗明道,姚禄安.纳米锌镀层在硫酸中的腐蚀和缓蚀机理[J].武汉大学学报(理学版),2005,51(6):683-686. |
| 作者姓名： | 颜肖慈 文汉 余娜 肖旺 罗明道 姚禄安 |
| 作者单位： | 1. 武汉大学,化学与分子科学学院,湖北,武汉,430072;中国科学院,金属研究所/金属腐蚀与防护国家重点实验室,辽宁,沈阳,110015 2. 武汉大学,物理科学与技术学院,湖北,武汉,430072 3. 武汉大学,口腔医学院,湖北,武汉,430079 4. 武汉大学,化学与分子科学学院,湖北,武汉,430072 |
| 基金项目： | 国家自然科学基金资助项目(59331030) |
| 摘 要： | 用失晕法测试了纳米锌镀层和0^#锌片在0．2mol／L硫酸介质中的腐蚀性能．结果表明纳米锌镀层的耐腐蚀性要远优于锌片，且在一定的实验条件下，纳米锌镀层的腐蚀速率为一常数．另外，本文还研究了溴化十六烷基吡啶和吡啶及其甲基衍生物在硫酸介质中对纳米锌镀层和0^#锌片的缓蚀性能．其中溴化十六烷基吡啶和3-甲基吡啶的缓蚀性能较好．并用密度泛函B3LYP方法和Onsager溶剂化模型，在6-31G水平上优化了溴化十六烷基毗啶、3-甲基吡啶和4-甲基毗啶分子的几何构型，用其电子结构数据探讨了它们的缓蚀机理。 |
| 关 键 词： | 纳米镀锌层 硫酸 腐蚀 缓蚀机理 |
| 文章编号： | 1671-8836(2005)06-0683-04 |
| 修稿时间： | 2005年4月26日 |
Corrosion and Inhibition Mechanism of Zinc Nanocrystalline Electrodeposition in Sulfuric Acid Solutions |
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| YAN Xiao-ci,WEN Han,YU Na,XIAO Wang,LUO Ming-dao,YAO Lu-an.Corrosion and Inhibition Mechanism of Zinc Nanocrystalline Electrodeposition in Sulfuric Acid Solutions[J].JOurnal of Wuhan University:Natural Science Edition,2005,51(6):683-686. | |
| Authors: | YAN Xiao-ci WEN Han YU Na XIAO Wang LUO Ming-dao YAO Lu-an |
| Institution: | YAN Xiao-ci~ |
| Abstract: | The corrosion behaviors of 0~(#)zinc and zinc nanocrystalline electrodeposition in 0.2 mol/L H_(2)SO_(4) solution have been studied by weight-less method.The results show that the corrosion resistance of zinc nanocrystalline electrodeposition is much better than that of 0~(#)zinc.In the experimental condition,the corrosion rate of zinc nanocrystalline electrodeposition is a constant.The inhibiting properties of bromo-hexadecyl pyridine,pyridine and its derivatives for the 0~(#)zinc and the zinc nanocrystalline electrodeposition in the H_(2)SO_(4) solution have been determined,respectively.The inhibiting efficiency of bromo-hexadecyl pyridine and 3-methyl pyridine is higher than that of the others.The geometries of bromo-hexadecyl pyridine,pyridine and its derivatives have been optimized by the B3LYP/6-31G~* and Onsager reaction field model,respectively.The inhibiting mechanism was discussed according to the data of the electronic structure of the molecules. |
| Keywords: | zinc nanocrystalline electrodeposition sulfuric acid corrosion inhibition mechanism |
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