将热镀锌(HDG)钢板经20 g/L的Ce(NO3)3·6H2O溶液处理后浸涂5%(体积比)硅烷,研究膜层的耐蚀性能.5%NaCl溶液中的电化学极化曲线测试结果和中性盐雾试验(NSS)结果表明,单独的铈盐处理或浸涂硅烷膜都能够提高热镀锌层的耐蚀性,而经过该铈盐处理后再浸涂硅烷形成双层膜后能够明显地抑制腐蚀过程中的阴极和阳极反应,极化电阻Rp较HDG试样增加40多倍,也是单一膜层处理试样的5～9倍,膜层的耐蚀性能明显提高.俄歇电子谱(AES)分析表明,热镀锌试样经过两步处理后,在表面形成了双层膜,外层是富含C、Si、O的均匀硅烷膜层,里层是富含Ce的稀土转化膜层.
参考文献
| [1] | Wilcox G D;Wharton J A .A review of chromate-free passivation treatments for zinc and zinc alloys[J].Transactions of the Institute of Metal Finishing,1997,75(06):B140. |
| [2] | Hinton B R W;Wilson L .The corrosion inhibition of zinc with cerous chloride[J].Corrosion Science,1989,29(09):967-985. |
| [3] | Aramaki K .Treatment of zinc surface with cerium(Ⅲ) nitrate to prevent zinc corrosion in aerated 0.5M NaCl solution[J].Corrosion Science,2001,43(11):2201-2215. |
| [4] | Aramaki K .A self-healing protective film prepared on zinc by treatment in a Ce(NO3)3 solution and modification with Ce(NO3)3[J].Corrosion Science,2005,47(05):1285-1298. |
| [5] | M.F.Montemor;A.M.Simoes;M.G.S.Ferreira .Composition and behaviour of cerium films on galvanised steel[J].Progress in Organic Coatings: An International Review Journal,2001(4):274-281. |
| [6] | LU Jin-tang,WU Hai-jiang,KONG Gang,CHE Chun-shan,XU Qiao-yu.Growth and corrosion behavior of rare earth film on hot-dip galvanized steel[J].中国有色金属学会会刊（英文版）,2006(06):1397-1401. |
| [7] | Yuan W;van Ooij W J .Characterization of organofunctional silane films on zinc substrates[J].Journal of Collid and Interface Science,1997,185(01):197-209. |
| [8] | T.F. Child;W.J. Van .Application of silane technology to prevent corrosion of metals and improve paint adhesion[J].Transactions of the Institute of Metal Finishing,1999(3):64-70. |
| [9] | 徐溢,王楠,张小凤,金洋华.直接用作金属表面新型防护涂层的硅烷偶联剂水解效果分析[J].腐蚀与防护,2000(04):157-159. |
| [10] | Danqing Zhu;Wim J. van Ooij .Enhanced corrosion resistance of AA 2024-T3 and hot-dip galvanized steel using a mixture of bis-[triethoxysilylpropyl]tetrasulfide and bis-[trimethoxysilylpropyl]amine[J].Electrochimica Acta,2004(7):1113-1125. |
| [11] | 吴海江,卢锦堂,陈锦虹.热镀锌钢表面硅烷膜耐蚀性能的初步研究[J].腐蚀与防护,2006(01):14-17. |
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