| 硫酸介质中氨基酸对钢的缓蚀性能 |
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| 引用本文： | 吴伟明,路民旭,程明焱,杜海燕,许立宁. 硫酸介质中氨基酸对钢的缓蚀性能[J]. 腐蚀与防护, 2008, 29(12) |
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| 作者姓名： | 吴伟明 路民旭 程明焱 杜海燕 许立宁 |
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| 作者单位： | 北京科技大学材料科学与工程学院;江西理工大学材料与化学工程学院; |
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| 基金项目： | 江西省研究生创新专项资金资助项目 |
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| 摘 要： | 通过自腐蚀电位、极化曲线和阻抗谱等电化学测试方法,研究了半胱氨酸、蛋氨酸两种氨基酸作为缓蚀剂在0.5 mol/L硫酸介质中对X65钢的缓蚀性能.研究结果表明:该缓蚀剂在较低的浓度具有良好的缓蚀效果,缓蚀效率随着浓度的增加而提高;同浓度比较,半胱氨酸的缓蚀效率更高.缓蚀原因可能是氨基酸分子或腐蚀产物在金属表面的吸附作用;极化曲线表明是混合型缓蚀剂.
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| 关 键 词： | 缓蚀剂 半胱氨酸 蛋氨酸 硫酸 电化学阻抗谱 |
Inhibition Performance of Amino Acids for Steel in Sulfuric Acid Solution |
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| WU Wei-ming LU Min-xu CHENG Ming-yan DU Hai-yan XU Li-ning. Inhibition Performance of Amino Acids for Steel in Sulfuric Acid Solution[J]. Corrosion & Protection, 2008, 29(12) |
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| Authors: | WU Wei-ming LU Min-xu CHENG Ming-yan DU Hai-yan XU Li-ning |
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| Affiliation: | WU Wei-ming~(1,2) LU Min-xu~1 CHENG Ming-yan~2 DU Hai-yan~2 XU Li-ning~1 (1.University of Science , Technology Beijing,Beijing 100083,China,2.Jiangxi University of Science , Technology,Ganzhou 341000,China) |
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| Abstract: | The inhibition effect of cystine and methionine on the corrosion of X65 steel in sulfuric acid solution (0.5mmol/L)was investigated using open-circuit potential measurements,polarization techniques and electrochemical impedance spectroscopy(EIS).The study revealed that the inhibitors had promising corrosion inhibition efficiency at low concentration and the inhibition efficiency(IE,%)increased with increasing the inhibitor's concentration.At the same concentration,cystine was more efficient than methionine.... |
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| Keywords: | corrosion inhibitor cystine methionine sulfuric acid EIS |
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