纳米SiO2改性环氧涂层海洋腐蚀规律
Marine Corrosion Law of Epoxy Coatings Modified by Nano-SiO2
摘 要
以本实验室开发的无溶剂环氧防腐蚀涂料专利配方为纳米复合涂层的载体,通过9个周期的模拟海洋环境挂片腐蚀失重试验,研究了该涂层在大气区、浪溅区、潮差区和全浸区的基本腐蚀规律,结合强极化稳态电化学试验对结果进行了验证.分析发现海-气界面区的腐蚀电流密度是全浸区的5~10倍,其腐蚀速度主要受阴极还原反应控制；大气区和全浸区主要发生均匀的全面腐蚀,而浪溅区和潮差区则发生以点腐蚀为主要形式的较为严重的局部腐蚀.
环氧涂层
海洋腐蚀规律
极化曲线
腐蚀形貌
nano-SiO2
epoxy coating
marine corrosion law
polarization curve
corrosion morphology
Abstract
The solvent-free epoxy heavy duty coatings with the patent formulation of our laboratory were used as the basic carrier for nano-SiO2,9 cyclical sea simulation tests were performed in order to study the corrosion laws of the nano-hybrid coating/steel samples hanged in different zones of marine environment such as atmospheric zone,splash zone,tidal zone and immersion zone,and then the potentiodynamic polarization curves were tested to prove the test results.The results showed that the corrosion current density in the air-sea interface zone was 5~10 times of that in the immersion zone.The corrosion rate was primarily controlled by cathodic reducing reaction.The general corrosion mainly took place in the atmospheric and immersion zones,but the pitting corrosion appeared in the splash and tidal zones.
中图分类号 TG174.46
所属栏目 试验研究
基金项目 国家科技支撑计划:海洋工程钢筋混凝土结构防腐关键技术及示范工程(2007BAB27B03);中国科学院知识创新工程重要方向项目(KZCXZ-YW-210)
收稿日期 2009/8/19
修改稿日期 2009/12/22
网络出版日期
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联系人作者李伟华(1685680@163.com)
备注李伟华,研究员.
引用该论文: TIAN Hui-wen,LI Wei-hua,HOU Bao-rong. Marine Corrosion Law of Epoxy Coatings Modified by Nano-SiO2[J]. Corrosion & Protection, 2010, 31(7): 515～519
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参考文献
【1】Moon H Y,Shin K J.Evaluation on steel bar corrosion embed in anti-washout underwater concrete containing mineral admixtures[J].Cement and Concrete Research,2006(36):521-529.
【2】张卫国,王小燕,姚素薇.纳米二氧化硅复合涂料的制备及其性能[J].化工学报,2006(11):2745-2748.
【3】刘秀晨,安成强.金属腐蚀学[M].北京:国防工业出版社,2002:243.
【4】Nguyen T N.A mathematical model for the catholic blistering of organic coatings oil steel immersed in electrolytes[J].Journal of Coatings Technology,1991(63):49-54.
【5】Morris W,Vazquez V M.Corrosion of reinforced concrete exposed to marine environment[J].Corrosion Reviews,2002(6):469-508.
【6】Arya C,Ofori F K.Influence of crack frequency on reinforcement corrosion in concrete[J].Cement and Concrete Research,1996(3):345-347.
【7】Nmai C K.Multi-functional organic corrosion inhibitor[J].Cement and Concrete Composites,2004(3):199-207.
【8】Cabrera J G.Deterioration of concrete due to reinforcement steel corrosion[J].Cement and concrete Composites,1996(1):47-59.
【9】Balabanic G,Bicanic N,Durekovic A.The influence of W/C ratio,concrete cover thickness and degree of water saturation on the corrosion rate of reinforcing steel in concrete[J].Cement and Concrete Research,1996(5):761-769.
【10】Destreri M D,Vogelsang J,Fedrizzi L.Water uptake evaluation of new water borne and high solid epoxy coatings part II:electrochemical impedance spectroscopy[J].Progress in Organic Coatings,1999(37):69-77.
【2】张卫国,王小燕,姚素薇.纳米二氧化硅复合涂料的制备及其性能[J].化工学报,2006(11):2745-2748.
【3】刘秀晨,安成强.金属腐蚀学[M].北京:国防工业出版社,2002:243.
【4】Nguyen T N.A mathematical model for the catholic blistering of organic coatings oil steel immersed in electrolytes[J].Journal of Coatings Technology,1991(63):49-54.
【5】Morris W,Vazquez V M.Corrosion of reinforced concrete exposed to marine environment[J].Corrosion Reviews,2002(6):469-508.
【6】Arya C,Ofori F K.Influence of crack frequency on reinforcement corrosion in concrete[J].Cement and Concrete Research,1996(3):345-347.
【7】Nmai C K.Multi-functional organic corrosion inhibitor[J].Cement and Concrete Composites,2004(3):199-207.
【8】Cabrera J G.Deterioration of concrete due to reinforcement steel corrosion[J].Cement and concrete Composites,1996(1):47-59.
【9】Balabanic G,Bicanic N,Durekovic A.The influence of W/C ratio,concrete cover thickness and degree of water saturation on the corrosion rate of reinforcing steel in concrete[J].Cement and Concrete Research,1996(5):761-769.
【10】Destreri M D,Vogelsang J,Fedrizzi L.Water uptake evaluation of new water borne and high solid epoxy coatings part II:electrochemical impedance spectroscopy[J].Progress in Organic Coatings,1999(37):69-77.
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