硅烷处理对涂层/金属体系耐蚀性能的影响
Effect of Saline Treatment on Corrosion of Coating/Metal System
摘 要
采用电化学阻抗研究了输电塔架用Q345钢基体上环氧富锌涂层的失效过程, 分析了硅烷处理对涂层/金属体的耐腐蚀性能的影响。结果表明, 环氧富锌涂层/未表面处理金属体系经过240h的浸泡腐蚀后涂层失去保护作用; 而环氧富锌涂层/硅烷处理金属体系经过408 h的浸泡腐蚀后涂层失去保护作用。经阻抗谱和孔隙率与吸水率分析表明, Q345钢经硅烷表面处理后延缓了腐蚀性介质侵入涂层, 较大地提高了体系的抗腐蚀能力。
硅烷处理
Q345钢
耐蚀性
zinc-rich epoxy coating
silane treatment
Q345 steel
corrosion inhibition
Abstract
The failure process of zinc-rich epoxy coatings on Q345 steel was studied by EIS, and the anti-corrosion effect of silane treated coating/metal was analyzed. The results indicated that zinc-rich epoxy coating without surface treatment/metal system practically lost protection after soaking for 240 h. Zinc-rich epoxy coating/silane treated metal system practically lost protection after soaking for 408 h. EIS and the ratio analyses of porosity and volume percentage show that silane treatment can delay the entering of the corrosive media in coatings.
中图分类号 TG174.46
所属栏目 试验研究
基金项目
收稿日期 2012/10/17
修改稿日期
网络出版日期
作者单位点击查看
备注徐群杰, 教授, 博士,
引用该论文: JI Xian-wu,SHI Shi-feng,XIAO Rong,XU Qun-jie,YANG Ling-hui. Effect of Saline Treatment on Corrosion of Coating/Metal System[J]. Corrosion & Protection, 2012, 33(12): 1081
被引情况:
【1】张明明,李文超,张圣麟, "AA6061-T6铝合金表面纳米Y2O3改性硅烷膜的耐蚀性",腐蚀与防护 35, 1122-1126(2014)
【2】韩 杰,刘 伟,闵宇霖,徐群杰, "金属基合金表面超疏水膜的构筑及其耐蚀性的研究进展",腐蚀与防护 37, 988-993(2016)
【3】范友华,陈洪, "金属基超疏水防腐蚀涂层的构建方法现状",腐蚀与防护 35, 1248-1255(2014)
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参考文献
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【3】王雪明, 李爱菊, 管从胜, 等. 防腐涂层钢铁基体表面处理的研究进展[J]. 石油和化工设备, 2004(06):44-47.
【4】Sundararajan G P, Van Ooij W J. Silane based pretreatments for automotive steels[J]. Surface Engineering, 2000, 16(4):315-320.
【5】van Ooij W J, Zhu D, Stacy M, et al. Corrosion Protection Properties of Organofunctional Silanes——An Overview[J]. Tsinghua Science & Technology, 2005, 10(6):639-664.
【6】张鉴清. 富锌涂层的电化学阻抗谱特性[J]. 中国腐蚀与防护学报, 1996, 16(3):175-180.
【7】Jianguo L, Gaoping G, Chuanwei Y. EIS study of corrosion behaviour of organic coating/Dacromet composite systems[J]. Electrochimica Acta, 2005, 50(16-17):3320-3332.
【8】Amirudin A, Thieny D. Application of electrochemical impedance spectroscopy to study the degradation of polymer-coated metals[J]. Progress in Organic Coatings, 1995, 26(1):1-28.
【9】谢德明, 胡吉明, 童少平, 等. Zn粉含量及表面沾污对环氧富Zn漆电化学行为的影响[J]. 金属学报, 2004, 40(1):103-108.
【10】Cerisola G, Bonora P L. Electrochemical test methods for the protective power control of painted steel surfaces[J]. Materials Chemistry, 1982, 7(2):241-248.
【11】Penttinen I M, Korhonen A S, Harju E, et al. Comparison of the corrosion resistance of TiN and (Ti, Al)N coatings[J]. Surface and Coatings Technology, 1992, 50(2):161-168.
【12】徐永祥, 严川伟, 丁杰, 等. 紫外光对涂层的老化作用[J]. 中国腐蚀与防护学报, 2004, 24(3):168-173.
【13】Brasher D M, Kingsbury A H. Electrical measurements in the study of immersed paint coatings on metal. I. Comparison between capacitance and gravimetric methods of estimating water-uptake[J]. Journal of Applied Chemistry, 1954, 4(2):62-72.
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