Corrosion Resistance of Weathering Steel Containing Niobium in Marine Atmospheric Conditions
摘 要
研制了含不同量铌的耐候钢(低铌耐候钢和高铌耐候钢),采用加速腐蚀试验,电化学试验,腐蚀形貌表征等手段研究了海洋大气条件下2种含铌耐候钢的腐蚀行为。结果表明:腐蚀初期,高铌耐候钢的腐蚀速率低于低铌耐候钢的,增加合金中铌含量可以改善锈层成分,提高自腐蚀电位,降低腐蚀电流密度;随着腐蚀时间的延长,铌对耐候钢的腐蚀影响降低到可以忽略不计。
Abstract
Weathering steels (low Nb weathering steel and high Nb weathering steel) with different amounts of niobium were developed. Corrosion behaviors of the two kinds of niobium-containing weathering steels under marine atmospheric conditions were studied by means of accelerated corrosion test, electrochemical test and corrosion morphology characterization. The results show that the corrosion rate of high Nb weathering steel was lower than that of low Nb weathering steel in the initial stage of corrosion. Increasing the content of Nb in the alloy could improve the composition of rust layer, increase the self-corrosion potential and reduce the corrosion current density. As the corrosion time increased, the corrosion effect of Nb on weathering steel was reduced to negligible.
中图分类号 TG174 DOI 10.11973/fsyfh-201909001
所属栏目 海洋工程装备材料防腐蚀
基金项目 国家自然科学基金资助项目(51364033;51304120);内蒙古自然科学基金项目(2015MS0556);内蒙古自治区重大基础研究开放课题(20140201);内蒙古自然科学基金重大项目(2018ZD07)
收稿日期 2018/5/25
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备注李岩(1983-),博士,副教授,从事金属材料相关研究,kenshin110@163.com
引用该论文: LI Yan,SHAO Mingrui,ZHAO Zengwu. Corrosion Resistance of Weathering Steel Containing Niobium in Marine Atmospheric Conditions[J]. Corrosion & Protection, 2019, 40(9): 627
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参考文献
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【3】董方,卜凡超,郄俊懋.Nb对09CuPRe耐候钢在模拟工业大气腐蚀环境下耐蚀性的影响.材料保护,2014,47(7):57-59.
【4】王杨,杨慧.用交流阻抗法研究铌钢在海水中的腐蚀行为.腐蚀科学与防护技术,2009,21(1):69-71.
【5】王淑兰,杨慧,庄立军.低碳铌微合金钢在海水中的腐蚀规律.钢铁研究学报,2007,19(1):53-56.
【6】RODRÍGUEZ RIPOLL M, OJALA N, KATSICH C, et al. The role of niobium in improving toughness and corrosion resistance of high speed steel laser hardfacings. Materials & Design, 2016, 99:509-520.
【7】张茁,陈康华,方华婵.微量Cr和Nb对Al-Zn-Mg-Cu-Zr合金力学性能和应力腐蚀性能的影响.中国有色金属学报,2008,18(6):985-990.
【8】谭永生.9Cr-1Mo型铁素体耐热钢组织退化的机理研究.西安:西安工程大学,2016.
【9】郭明晓,潘晨,王振尧,等.碳钢在模拟海洋工业大气环境中初期腐蚀行为研究.金属学报,2018,54(1):65-75.
【10】李东亮,付贵勤,朱苗勇.湿热工业海洋大气中Si对桥梁钢腐蚀行为的影响.中国腐蚀与防护学报,2016,36(5):433-440.
【11】ALCÁNTARA J, CHICO B, DÍAZ I, et al. Airborne chloride deposit and its effect on marine atmospheric corrosion of mild steel. Corrosion Science, 2015, 97:74-88.
【12】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.材料热处理学报,2008,29(4):170-175.
【13】郝献超,肖葵,张汉青,等.模拟海洋大气环境下Cu和Cr对耐候钢耐腐蚀性能的影响.材料保护,2009,42(1):21-23,43,90.
【14】夏妍.碳钢和耐候钢在若干典型环境下的腐蚀行为研究.杭州:浙江大学,2014.
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