稀土离子和香兰素在H2SO4溶液中对冷轧钢的缓蚀协同效应
Synergistic Inhibition Effect of Rare Earth Ions and Vanillin on Corrosion of Cold Rolled Steel in H2SO4 Solution
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/L H2SO4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.
冷轧钢
香兰素
稀土
缓蚀协同效应
sulfuric acid
cold rolled steel
vanillin
rare earth ion
synergism
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,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.
中图分类号 TG174.42
所属栏目 试验研究
基金项目
收稿日期 2008/7/15
修改稿日期 2008/7/25
网络出版日期
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备注李向红,讲师.
引用该论文: 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 H2SO4 Solution[J]. Corrosion & Protection, 2009, 30(7): 480～483
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参考文献
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【2】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(3):13-16.
【3】El-Etre A Y.Inhibition of acid corrosion of aluminum using vanillin[J].Corrosion Science,2001,43:1031-1039.
【4】Emregül K C,Hayval M.Studies on the effect of vanillin and protocatechualdehyde on the corrosion of steel in hydrochloric acid[J].Materials Chemistry Physics,2004,83:209-216.
【5】许越,陈湘,吕祖舜,等.金属表面稀土转化膜的研究进展[J].稀土,2002,23(3):59- 62.
【6】李向红,邓书端,木冠南,等.缓蚀协同效应研究现状及展望[J].清洗世界,2006,22(18):22-23.
【7】Aramaki K.Synergistic inhibition of zinc corrosion in 0.5 M NaCl by combination of cerium (III) chloride and sodium silicate[J].Corrosion Science,2002,44:871-886.
【8】Aramaki K.Cerium (III) chloride and sodium octylthiopropionaee as an effective inhibitor mixture for zinc corrosion in 0.5 M NaCl[J].Corrosion Science,2002,44:1361-1374.
【9】李向红,屈庆,江书安,等.“稀土离子和配体在钢、铝表面的吸附及其缓蚀协同机理”项目取得创新性进展[J].中国科学基金,2006,20(2):99-100.
【10】Mu G N,Zhao T P,Liu M,et al.Effect of Metallic Cations on Corrosion Inhibition of an Anionic Surfactant for Mild Steel[J].Corrosion,1996,52:853-856.
【11】木冠南,李向红,屈庆,等.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作用[J].化学学报,2004,62(24):2386-2390.
【12】Schweinsberg D P,Ashworth V.The inhibition of the corrosion of pure iron in 0.5 M suphuric acid by n-alkyl quaternary ammonium iodines[J].Corrosion Science,1988,28:539-543.
【13】武汉大学,吉林大学,编.无机化学(下册)(3版)[M].北京:高等教育出版社,1994(2006重印):1071.
【14】Murakawa T,Nagaura S,Hacherman N.Coverage of iron surface by organic compounds and anions in acid solutions[J].Corrosion Science,1967(7):79-83.·防腐蚀技术通讯·
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