| 稀土离子和香兰素在H2SO4溶液中对冷轧钢的缓蚀协同效应 |
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| 引用本文： | 李向红,邓书端,付惠,木冠南. 稀土离子和香兰素在H2SO4溶液中对冷轧钢的缓蚀协同效应[J]. 腐蚀与防护, 2009, 30(7): 480-483 |
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| 作者姓名： | 李向红 邓书端 付惠 木冠南 |
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| 作者单位： | 西南林学院基础部,昆明,650224;西南林学院木质科学与装饰工程学院,昆明,650224;云南大学化学系,昆明,650091 |
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| 摘 要： | 用失重法研究了四种稀土离子(La3+,Ce3+,Ce4+,Nd3+)和香兰素(4-羟基-3-甲氧基-苯甲醛)在1.0 mol/LH2SO4介质中对冷轧钢的缓蚀协同效应。结果表明,香兰素对冷轧钢有中等程度的缓蚀作用,缓蚀率随其浓度的增加而增大;四种稀土离子对冷轧钢的缓蚀作用均较差,最大缓蚀率仅为20%左右。香兰素和稀土Ce4+复配后对冷轧钢产生了明显的缓蚀协同效应,最大缓蚀率可达95%左右;而与La3+,Ce3+和Nd3+复配后均无缓蚀协同效应。
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| 关 键 词： | 硫酸 冷轧钢 香兰素 稀土 缓蚀协同效应 |
Synergistic Inhibition Effect of Rare Earth Ions and Vanillin on Corrosion of Cold Rolled Steel in H_2SO_4 Solution |
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| LI Xiang-hong,DENG Shu-duan,FU Hui,MU Guan-nan. Synergistic Inhibition Effect of Rare Earth Ions and Vanillin on Corrosion of Cold Rolled Steel in H_2SO_4 Solution[J]. Corrosion & Protection, 2009, 30(7): 480-483 |
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| Authors: | LI Xiang-hong DENG Shu-duan FU Hui MU Guan-nan |
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| Affiliation: | 1.Department of Fundamental Courses;Southwest Forestry University;Kunming 650224;China;2.Department of Wood Science and Technology;3.Department of Chemistry;Yunnan University;Kunming 650091;China |
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| Abstract: | The synergistic inhibition effect of four rare earth ions(La3+,Ce3+,Ce4+,Nd3+) and vanillin(4-hydroxy-3-methoxy-benzaldehyde) on the corrosion of cold rolled steel(CRS) in 1.0 mol/L H2SO4 solution was studied by weight loss method.The present study revealed that vanillin had a moderate inhibitive effect on the corrosion of CRS in 1.0 mol/L H2SO4 solution,and the inhibition efficiency increased with the concentration.The rare earth ions of La3+,Ce3+,Ce4+ and Nd3+ had a negligible effect in 1.0 mol/L H2SO4,an... |
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| Keywords: | sulfuric acid cold rolled steel vanillin rare earth ion synergism |
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