试验采用γ-氨丙基三乙氧基硅烷(γ-APS)协同稀土铈盐和镧盐钝化镀锌钢板.通过先在试样表面自组装一层γ-APS薄膜,再沉积稀土转化膜制备硅烷稀土复合膜.采用电化学交流阻抗技术(EIS)、盐雾试验检测复合膜的耐腐蚀性,结果表明复合膜的耐腐蚀性和致密性相对于单一硅烷、稀土转化膜大幅度提高,其中硅烷-铈盐复合膜比硅烷-镧盐复合膜耐腐蚀,中性盐雾试验时间达到76 h.原子力显微镜检测结果表明,复合膜相对于单一稀土转化膜平整.EDS检测结果得出,硅烷与稀土化合物发生了协同作用,促进了稀土转化膜在锌表面沉积.初步探讨了复合膜的成膜机理和耐腐蚀机理.
参考文献
| [1] | Trabelsi W;Cecilio P;Ferreira MGS;Montemor MF .Electrochemical assessment of the self-healing properties of Ce-doped silane solutions for the pre-treatment of galvanised steel substrates[J].Progress in Organic Coatings: An International Review Journal,2005(4):276-284. |
| [2] | 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. |
| [3] | Zhu D;Ooij W J .Enhanced corrosion resistance of AA 2024-T3 and hot-dip galvanized steel using a mixture of bis-[triethoxysilylpropyl]tetrasolfide and bis-[trimethoxysilylpropyl]amine[J].Electrochimica Acta,2004,49(07):1 113-1 125. |
| [4] | Zhu DQ.;van Ooij WJ. .Corrosion protection of metals by water-based silane mixtures of bis-[trimethoxysilylpropyl]amine and vinyltriacetoxysilane [Review][J].Progress in Organic Coatings: An International Review Journal,2004(1):42-53. |
| [5] | Montemor MF;Trabelsi W;Zheludevich M;Ferreira MGS .Modification of bis-silane solutions with rare-earth cations for improved corrosion protection of galvanized steel substrates[J].Progress in Organic Coatings: An International Review Journal,2006(1):67-77. |
| [6] | Arnott D R;Ryan N E;Hinton B R et al.Auger and XPS studies of cerium corrosion inhibition on 7075 aluminum alloy[J].Applied Surface Science,1985,22-23:236-251. |
| [7] | Hinton B R;Wilson L .The corrosion inhibition of zinc with cereus chloride[J].Corrosion Science,1989,29(08):967-975. |
| [8] | 于兴文,曹楚南,林海潮,周德瑞,尹钟大.稀土在钢铁、锌及镀锌防腐蚀应用研究中的进展[J].材料保护,2000(04):39-40. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%