中性环境中X70钢的交流腐蚀行为
Alternating Current Corrosion Behaviors of X70 Steel in Neutral Environments
摘 要
采用失重法研究了不同电流密度(0~500 A·m-2)下交流电对X70钢腐蚀行为的影响。结果表明, 随着交流电流密度的增加, 腐蚀速率呈幂函数规律增大。X70钢在不同电解液中的交流腐蚀形态有所不同。在SO42-存在且无其他侵蚀性离子的环境中, 交流干扰诱发均匀腐蚀; 而在Cl-存在环境时, 交流电与Cl-的联合侵蚀作用将诱发点蚀。生成的腐蚀产物具有一定的保护性, 且由于交流电的电解作用导致电解液电阻率发生改变, 使得体系中加载的交流电流值呈指数衰减函数规律变化。
中性环境
浸泡试验
交流腐蚀
X70 steel
neutral environment
immersion test
AC corrosion
Abstract
Weight loss tests of X70 steel samples were performed in soil-simulating conditions at various AC current densities from 0 to about 500 A·m-2. The results showed that the corrosion rate increased as AC current density increased. Corrosion induced by AC current can present different types in different electrolyte environments. The uniform corrosion happened on X70 steel surface due to the influence of alternating current in the environment with SO42- and without other aggressive ions. But when Cl- existed, pitting corrosion happened due to the influence of alternating current and Cl-. The corrosion product had certain protection. Because the electrolysis role of alternating current changed the electrolyte resistivity, the alternating current value decreased with the soak time, and the decline feature presents exponential law.
中图分类号 TG172 TE988
所属栏目 试验研究
基金项目 中央高校基本科研业务费专项资金(11CX06077A); 中国石油大学(华东)研究生创新工程项目(CX-1240)
收稿日期 2012/6/17
修改稿日期
网络出版日期
作者单位点击查看
备注李自力, 教授, 博士生导师,
引用该论文: YANG Yan,LI Zi-li,WEN Chuang,ZHANG Yu-jiao. Alternating Current Corrosion Behaviors of X70 Steel in Neutral Environments[J]. Corrosion & Protection, 2013, 34(4): 291
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】徐增华, 王东辉.金属的交流电腐蚀[J].腐蚀与防护, 1996, 27(1):45-48.
【2】胡士信, 路民旭, 杜艳霞, 等.管道交流腐蚀的新观点[J].腐蚀与防护, 2010, 31(6):419-424.
【3】王新华, 陈振华, 何仁洋.埋地钢质管道交流干扰测试与评价[J].腐蚀与防护, 2011, 32(1):66-70.
【4】Nielsen L V. Role of alkalization in AC induced corrosion of pipelines and concequences hereof in relation to CP requirements[C]//NACE 2005.Houston, Texas, UAS:[s.n.], 2005:5188.
【5】吴荫顺, 曹备.阴极保护和阳极保护—原理、技术及工程应用 [M].北京:中国石化出版社, 2007.
【6】尹可华, 唐明华, 熊祥键.埋地钢构筑物在工频电场作用下的腐蚀[J].中国腐蚀与防护学报, 1982, 2(3):33-41.
【7】杜晨阳, 曹备, 吴荫顺.交流电干扰下-850mV(CSE)阴极保护电位准则的适用性研究[J].腐蚀与防护, 2009, 30(9): 655-659.
【8】李自力, 丁清苗, 张迎芳, 等.用电化学方法建立交流干扰下X70钢的最佳阴极保护电位[J].腐蚀与防护, 2010, 31(6):436-439.
【9】Fu A Q, Cheng Y F.Effects of alternating current on corrosion of a coated pipeline steel in a chloride-containing carbonate/bicarbonate solution [J].Corrosion Science, 2010, 52(2):612-619.
【10】Bosch R W, Bofaerts W F.A theoretical study of AC-induced corrosion considering diffusion phenomena[J].Corrosion Science.1998, 40(2):323-336.
【11】Panossian Z, Filho S E A, de Almeida N L, et al. A new thermodynamic criterion and a new field methodology to verify the probability of AC corrosion in buried pipelines[C]//NACE 2010. Houston, Texas, USA:[s.n.], 2010:1115.
【12】李自, 杨燕.金属材料交流腐蚀机理-影响因素及风险评价[J].化工学报.2011, 62(7):1790-1799.
【13】李自力, 杨燕.金属管道交流腐蚀研究新进展[J].石油学报.2012, 33(1):164-171.
【2】胡士信, 路民旭, 杜艳霞, 等.管道交流腐蚀的新观点[J].腐蚀与防护, 2010, 31(6):419-424.
【3】王新华, 陈振华, 何仁洋.埋地钢质管道交流干扰测试与评价[J].腐蚀与防护, 2011, 32(1):66-70.
【4】Nielsen L V. Role of alkalization in AC induced corrosion of pipelines and concequences hereof in relation to CP requirements[C]//NACE 2005.Houston, Texas, UAS:[s.n.], 2005:5188.
【5】吴荫顺, 曹备.阴极保护和阳极保护—原理、技术及工程应用 [M].北京:中国石化出版社, 2007.
【6】尹可华, 唐明华, 熊祥键.埋地钢构筑物在工频电场作用下的腐蚀[J].中国腐蚀与防护学报, 1982, 2(3):33-41.
【7】杜晨阳, 曹备, 吴荫顺.交流电干扰下-850mV(CSE)阴极保护电位准则的适用性研究[J].腐蚀与防护, 2009, 30(9): 655-659.
【8】李自力, 丁清苗, 张迎芳, 等.用电化学方法建立交流干扰下X70钢的最佳阴极保护电位[J].腐蚀与防护, 2010, 31(6):436-439.
【9】Fu A Q, Cheng Y F.Effects of alternating current on corrosion of a coated pipeline steel in a chloride-containing carbonate/bicarbonate solution [J].Corrosion Science, 2010, 52(2):612-619.
【10】Bosch R W, Bofaerts W F.A theoretical study of AC-induced corrosion considering diffusion phenomena[J].Corrosion Science.1998, 40(2):323-336.
【11】Panossian Z, Filho S E A, de Almeida N L, et al. A new thermodynamic criterion and a new field methodology to verify the probability of AC corrosion in buried pipelines[C]//NACE 2010. Houston, Texas, USA:[s.n.], 2010:1115.
【12】李自, 杨燕.金属材料交流腐蚀机理-影响因素及风险评价[J].化工学报.2011, 62(7):1790-1799.
【13】李自力, 杨燕.金属管道交流腐蚀研究新进展[J].石油学报.2012, 33(1):164-171.
相关信息
