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材料工程  2013, Vol. 0 Issue (4): 50-55,62    DOI: 10.3969/j.issn.1001-4381.2013.04.010
  材料与工艺 本期目录 | 过刊浏览 | 高级检索 |
冷轧钢表面锆盐复合硅烷涂层的性能及结构研究
杨玉昌, 王锋, 胡剑青, 涂伟萍
华南理工大学 化学与化工学院,广州 510640
Property and Process of Cold-rolled Steel Zirconia-silica Coating
YANG Yu-chang, WANG Feng, HU Jian-qing, TU Wei-ping
Department of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510640,China
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摘要 采用溶胶-凝胶法,以氟锆酸钠与1,2-双(三甲氧基硅基)乙烷(BTMSE)为前驱体,在冷轧钢基体上制备无机/有机复合硅烷涂层。采用电化学技术(Tafel曲线与阳极极化曲线)及硫酸铜点滴实验对比考察复合硅烷涂层与纯硅烷涂层防腐性能。使用SEM,FTIR,XPS等测试方法考察其腐蚀前后表面形貌、官能团组成、元素价键结构等性质。结果表明:相比于纯硅烷涂层,复合涂层的腐蚀电流密度明显降低,极化电阻明显增大,腐蚀前后微观形貌基本不变。通过XPS对价键进行分析,认为在金属表面形成了Si-O-Zr键。对锆盐在金属表面成键及防腐机理进行探讨,并提出了新的结构模型。
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杨玉昌
王锋
胡剑青
涂伟萍
关键词 溶胶-凝胶法氟锆酸钠复合硅烷涂层结构模型    
Abstract:A thin top layer composed of zirconia and organosilicone was prepared on the cold-rolled steel through condensation reactions by sol-gel method, using sodium fluozirconate and 1,2-bis(trimethoxysilyl)ethane as precursor. The anti-corrosion property of the coating was measured by electro-chemical testing methods and CuSO4 dripping experiment. The functional groups, morphology and composition were investigated by SEM, FTIR and XPS methods, respectively. The results indicate that, compared to the pure silane coating, the corrosion current density of the composite coating is much lower and the polarization resistance increases significantly, and the morphology does not change essentially after the corrosion. The XPS analysis reveals that Si-O-Zr bond was formed on the surface. A new structural model is gave after investigating the mechanism of bonding and anti-corrosion of the zirconium salt on the surface.
Key wordssol-gel method    sodium fluozirconate    composite silane coating    structural model
收稿日期: 2012-03-17      出版日期: 2013-04-20
中图分类号:  TB332  
作者简介: 杨玉昌(1987-),男,硕士,主要从事有机硅金属表面处理及树脂合成方面研究,联系地址:广州市华南理工大学16号楼314(510640),E-mail:young81@foxmail.com
引用本文:   
杨玉昌, 王锋, 胡剑青, 涂伟萍. 冷轧钢表面锆盐复合硅烷涂层的性能及结构研究[J]. 材料工程, 2013, 0(4): 50-55,62.
YANG Yu-chang, WANG Feng, HU Jian-qing, TU Wei-ping. Property and Process of Cold-rolled Steel Zirconia-silica Coating. Journal of Materials Engineering, 2013, 0(4): 50-55,62.
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http://jme.biam.ac.cn/CN/10.3969/j.issn.1001-4381.2013.04.010      或      http://jme.biam.ac.cn/CN/Y2013/V0/I4/50
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