合金元素铬和铝对J55钢电化学腐蚀行为的影响
Effect of Alloying Elements Cr and Al on Electrochemical Corrosion Behavior of J55 Steel
摘 要
为了解铬、铝合金元素对J55钢电化学腐蚀行为的影响，采用电化学测试和浸泡试验研究了含铬和铝的J55钢在3.5% NaCl溶液中的电化学腐蚀行为。结果表明：加入1.49% Cr、1.47% Al和1.98% Cr、1.95% Al后，J55钢的开路电位（或自腐蚀电位）明显正移，腐蚀活性降低，极化电阻增大，自腐蚀电流密度减小，腐蚀速率大大降低；加入铝、铬元素后的J55钢在NaCl溶液中浸泡200 d后，其表面生成了富集铝和铬的具有保护性的腐蚀产物膜，提高了钢的耐腐蚀性能。
NaCl溶液
电化学腐蚀行为
J55 steel
NaCl solution
electrochemical corrosion behavior
Abstract
In order to understand the effect of alloying elements of Cr and Al on electrochemical corrosion behavior of J55 steel, the steel's electrochemical corrosion behavior in 3.5wt% NaCl solution was investigated by electrochemical measuring and immersion testing. The results show that, after adding 1.49wt% Cr, 1.47wt% Al and 1.98wt% Cr, 1.95wt% Al into J55 steel, open corrosion potention (Eocp) or self-corrosion potential of the alloyed J55 steel moved to the positive direction, this indicating the reduction of corrosion activity. The alloyed steels exhibited higher corrosion resistance, lower corrosion current density and lower corrosion rate. After the alloyed steels were immersed in NaCl solution for 200 d, protective corrosion product with Cr- and Al-rich was found on the surface of the steels, the corrosion resistance of the steel was increased by the corrosion product.
中图分类号 TG172 TG142.33 DOI 10.11973/jxgccl201703009
所属栏目 试验研究
基金项目 西安石油大学全日制硕士研究生创新基金资助项目（2015cx140531）；陕西省教育厅专项科研计划项目（15JK1577）；西安石油大学《材料科学与工程》省级优势学科资助项目
收稿日期 2016/4/2
修改稿日期 2017/1/17
网络出版日期
作者单位点击查看
备注温宁华(1991-),女,陕西宝鸡人,硕士研究生。
引用该论文: WEN Ning-hua,LUO She-ji,WANG Rong. Effect of Alloying Elements Cr and Al on Electrochemical Corrosion Behavior of J55 Steel[J]. Materials for mechancial engineering, 2017, 41(3): 43～48
温宁华,雒设计,王荣. 合金元素铬和铝对J55钢电化学腐蚀行为的影响[J]. 机械工程材料, 2017, 41(3): 43～48
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参考文献
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【2】YAMASHITA M, MIYUKI H, MATSUDA Y, et al. The long term growth of the protective rust layer formed on weathering steel by atmospheric corrosion during a quarter of a century[J]. Corrosion Science,1994, 36(2):283-299.
【3】HAO L, ZHANG S, DONG J, et al. Evolution of corrosion of MnCuP weathering steel submitted to wet/dry cyclic tests in a simulated coastal atmosphere[J]. Corrosion Science, 2012, 58(5):175-180.
【4】SHIFLER D A.Understanding material interactions in marine environments to promote extended structural life[J]. Corrosion Science, 2005, 47(10):2335-2352.
【5】MELCHERS R E. Effect of small compositional changes on marine immersion corrosion of low alloy steels[J]. Corrosion Science, 2004, 46(7):1669-1691.
【6】李晨希. 金属材料及其成形性能[M]. 北京:化学工业出版社, 2009.
【7】MOISEEVA L S, KUKSINA O D. Material science and corrosion protection-predicting the corrosion aggressiveness of CO2-containing media in oil and gas wells[J]. Chemical and Petroleum Engineering, 2000, 36(5/6):307-311.
【8】孙建波, 柳伟, 常炜, 等. 低铬X65管线钢CO2腐蚀产物膜的特征及形成机制[J]. 金属学报, 2009, 45(1):84-90.
【9】吕祥鸿, 赵国仙, 张建兵, 等. 低Cr钢在H2S/CO2环境中的腐蚀行为研究[J]. 材料工程, 2009(10):20-25.
【10】EVANS U R. The corrosion of metals[J]. Nature, 1945, 120(12):1337-1342.
【11】黄亚敏, 苏方腾. 电化学方法研究12Cr2MoAlXt钢在海水中的耐蚀性[J]. 中国腐蚀与防护学报, 1988, 8(1):72-77.
【12】赖蓓青, 刘闪光. Al元素对310S耐热组织和力学性能影响的研究[J]. 材料工程, 2009(1):36-40.
【13】范晓明, 雷昶, 马斌, 等. Sr、Cr对高铁A356合金力学性能的影响[J]. 热加工工艺, 2014, 43(18):106-108.
【14】MUHAMMABU M M, SHERIFF J, HAMZAH E. A review of literature for the low flow accelerated corrosion of mitred bends[J]. International Journal of Emerging Technology and Advanced Engineering, 2013, 8(3):663-677.
【15】张军, 赵文珍, 来维亚, 等. J55钢在气液双相流NaCl溶液中的腐蚀行为[J]. 机械工程材料, 2010, 34(9):60-63.
【16】慕立俊, 张军, 赵文珍, 等. J55钢在NaHCO3溶液中的腐蚀行为[J]. 机械工程材料, 2010, 34(8):15-17.
【17】SKALE S, DOLE AČU EK V, SLEMNIK M. Substitution of the constant phase element by Warburg impedance for protective coatings[J]. Corrosion Science, 2007, 49(3):1045-1055.
【18】SONG S Z. Investigative methods of corrosion electrochemistry[M]. Bejing:Chemical Industry Press, 1988.
【19】吕祥鸿, 赵国仙, 张建兵, 等. 模拟塔里木油田环境5Cr套管用钢的H2S/CO2腐蚀行为[J]. 材料科学与工程学报, 2010, 28(4):529-535.
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