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.
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, and the maximum inhibition efficiency was not more than 20%. The experiments of incorporation of rare earth ions and vanillin, indicated that Ce4+ and vanillin produced strong synergistic effect on corrosion inhibition for CRS, and the maximum inhibition efficiency was about 95%. However, there was no synergistic inhibition effect between other rare earth ions (La3+, Ce3+ and Nd3+) and vanillin.
参考文献
| [1] | 赵元,丁绍民,宋华付.香兰素生产工艺研究进展[J].化工进展,2001(03):13-16,28. |
| [2] | Emregul KC.;Hayvali M. .Studies on the effect of vanillin and protocatechualdehyde on the corrosion of steel in hydrochloric acid[J].Materials Chemistry and Physics,2004(2/3):209-216. |
| [3] | 许越,陈湘,吕祖舜,周德瑞.金属表面稀土转化膜的研究进展[J].稀土,2002(03):58-62. |
| [4] | 李向红,邓书端,木冠南,付惠,李涛洪.缓蚀协同效应研究现状及展望[J].清洗世界,2006(12):18-23. |
| [5] | 李向红,屈庆,江书安,周俊."稀土离子和配体在钢、铝表面的吸附及其缓蚀协同机理研究"项目取得创新性进展[J].中国科学基金,2006(02):99-100,103. |
| [6] | G.N.Mu;T.P.Zhao .Effect of Metallic Cations on Corrosion Inhibition of an Anionic Surfactant for Mild Steel[J].Corrosion: The Journal of Science and Engineering,1996(11):853-856. |
| [7] | 木冠南,李向红,屈庆,周俊.稀土铈（IV）离子和钼酸钠在盐酸溶液中对冷轧钢的缓蚀协同效应[J].化学学报,2004(24):2386-2390. |
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