吴红艳,赵艳敏,艾峥嵘,杜林秀,王国栋

• 1:东北大学轧制技术及连轧自动化国家重点实验室
• 2:沈阳铸锻工业有限公司

摘要(Abstract)：

利用周期浸润腐蚀实验和电化学方法,研究了耐候钢在模拟工业大气环境下的腐蚀演化行为,并利用光学显微镜(OM)、扫描电镜(SEM)和电子探针(EPMA)等分析了实验钢显微组织、腐蚀形貌、锈层特征及腐蚀产物中Cu元素的分布。结果表明,实验钢的组织主要由准多边形铁素体和粒状贝氏体组成;实验钢的腐蚀质量损失率随Cu含量的增加及时间的延长而逐渐降低,且其质量损失量基本相同,锈层厚度逐渐减小,致密度增加;Cu元素在锈层的缝隙和孔洞等缺陷处富集;随着腐蚀时间的增加,自腐蚀电位增大,自腐蚀电流密度下降;含Cu钢锈层促进了阴极还原过程,同时抑制了阳极氧化过程。

关键词(KeyWords)： 高强耐候钢;工业大气环境;腐蚀性能;锈层特征

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(51204050);; 辽宁省博士启动基金资助项目(201120007);; 中央高校基本科研业务费专项资金资助项目(N110407005)

作者(Author): 吴红艳,赵艳敏,艾峥嵘,杜林秀,王国栋

DOI: 10.13289/j.issn.1009-6264.2013.11.028

参考文献(References)：

• [1]王志奋,吴立新,孙宜强,等.组织结构对贝氏体钢的耐腐蚀性能影响[J].物理测试,2011,29(4):37-41.WANG Zhi-fen,WU Li-xin,SUN Yi-qiang,et al.The effect of the microstructure on the corrosion resistance of bainitic steel[J].Physics Examination and Testing,2011,29(4):37-41.
• [2]Oh S J,Cook D C,Townsend H E.Atmospheric corrosion of different steels in marine,rural and industrial environments[J].Corrosion Science,1999,41(9):1687-1702.
• [3]Yamashita M,Nagano H,Misawa T,et al.Structure of protective rust layers formed on weathering steels by long-term exposure in the industrial atmospheres of Japan and North America[J].ISIJ International,1998,38(3):285-290.
• [4]Townsend H E.Extending the limits of growth through development of corrosion resistant steel product[J].Corrosion,1999,55(6):547-553.
• [5]李东东,李胜军,庞晓露,等.低碳贝氏体钢在干燥和高湿环境中的腐蚀行为[J].材料热处理学报,2011,32(4):110-114.LI Dong-dong,LI Sheng-jun,PANG Xiao-lu,et al.Corrosion behavior of a low-carbon bainitic steel in dry environment and high humidity environment[J].Transactions of Materials Heat Treatment,2011,32(4):110-114.
• [6]Yamashita M,Miyuki H,Nagano H.Corrosion resistance of weathering steel and its application[J].Sumitomo Search,1995,50(57):12-17.
• [7]Wu H Y,Du L X,Liu X H.Dynamic recrystallization and precipitation behavior of weathering steel with Mn-Cu-V[J].Journal of Materials Science and Technology,2011,27(12):1131-1138.
• [8]王树涛,杨善武,高克玮,等.低合金耐候钢在含氯离子环境中的耐腐蚀性能[J].材料热处理学报,2008,29(4):170-175.WANG Shu-tao,YANG Shan-wu,GAO Ke-wei,et al.Corrosion resistance of low alloying weathering steels in environment containing chloride ion[J].Transactions of Materials Heat Treatment,2008,29(4):170-175.
• [9]于全成,王振尧,汪川.表面沉积NaCl和NaHSO3的低合金钢和碳钢在干湿交替条件下的腐蚀行为[J].金属学报,2010,46(9):1133-1140.YU Quan-cheng,WANG Zhen-yao,WANG Chuan.Corrosion behaviors of low alloy steel and carbon steel deposited with NaCl and NaHSO3under dry/humid alternative condition[J].Acta Metallurgica Sinica,2010,46(9):1133-1140.
• [10]Ma Y T,Ying Li,Wang F H.Corrosion of low carbon steel in atmospheric environments of different chloride content[J].Corrosion Science,2009,51(5):997-1006.
• [11]Castao J G,Botero C A,Restrepo A H,et al.Atmospheric corrosion of carbon steel in Colombia[J].Corrosion Science,2010,52(1):216-223.
• [12]Misawa T,Asami K,Hashimoto K,et al.The mechanism of atmospheric rusting and the protective amorphous rust on low alloy steel[J].Corrosion Science,1974,14(4):279-289.
• [13]Feigenbaum C,Galor L,Yahalom J.Microstructure and chemical composition of natural scale layers[J].Corrosion,1978,34(2):65-70.
• [14]Nishimura T,Katayama H,Noda K,et al.Electrochemical behavior of rust formed on carbon steel in a wet/dry environment containing chloride ions[J].Corrosion,2000,56(9):935-941.

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