High corrosion resistance film on rebar by cerium modification

查看全文 作　　者：Hongze [1]An;Zhengyi [1]Xu;Guozhe [1,2]Meng;Weihua [2]Li;Yanqiu [1]Wang;Bin [1]Liu;Junyi [1]Wang;Fuhui [1,3]Wang

机构地区：[1]Corrosion and Protection Laboratory,Key Laboratory of Superlight Materials and Surface Technology(Harbin Engineering University),Ministry of Education,Harbin 150001,China;[2]Southern Marine Science and Engineering Guangdong Laboratory,Sun Yat-sen University,Zhuhai 519082,China;[3]Corrosion and Protection Division,Shenyang National Laboratory for Material Science,Northeastern University,Shenyang 110819,China

出　　处：《Journal of Materials Science & Technology》索引2021年第5期,共12页

基　　金：financially supported by the National Natural Science Foundation of China(Nos.51771061 and 51571067);the National Basic Research Program of China(No.2014CB643301);the Natural Science Foundation of Heilongjiang Province,China(No.E2016022);the Fundamental Research Founds for the Central Universities(No.HEUCFG201838);the Key Laboratory of Superlight Materials and Surface Technology(Harbin Engineering University)。 摘　　要：A cerium film was prepared on the surface of rebar by chemical conversion method to enhance its corrosion resistance.The film in the simulated concrete pore solution was measured by electrochemical method,transmission electron microscope(TEM)and X-ray photoelectron spectroscopy(XPS).The effect of temperature on film formation was studied,and the optimum temperature was determined at 35℃.The film produced by too high formation temperature has more defects,resulting in the lower corrosion resistance.The Ce film resistance increased with time evolution until 800 h,then decreased and stabilized.The Ce film layer has a double-layer film structure,the upper layer is an oxide of cerium,and the underlayer is an oxide of iron.Results revealed that after being immersed in the simulated concrete pore solution,the corrosion resistance of the Ce film was enhanced by self-densification. 关键词：Ce film Concrete simulation solution Double-layer film Self-densification

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High corrosion resistance film on rebar by cerium modification

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