阴极保护下X70钢的氢脆敏感性
Hydrogen Embrittlement of X70 Steel under Cathodic Protection
摘 要
通过极化曲线测试和慢应变速率试验确定了X70钢在3%（质量分数） NaCl溶液中的析氢电位和氢脆区间，并通过电化学阻抗谱阐述了阴极极化程度与氢脆之间的关系。结果表明：X70钢在3% NaCl溶液中只发生析氢反应的电位为-1.0 V，随着阴极极化程度的增大，其氢脆敏感性增大，这主要是因为随着阴极极化程度的增加，电荷转移电阻减小，促进了吸附氢的形成。
X70钢
氢脆
析氢电位
慢应变速率试验
电化学阻抗谱
cathodic polarization
X70 steel
hydrogen embrittlement
hydrogen evolution potential
slow strain rate test (SSRT)
electrochemical impedance spectroscopy (EIS)
Abstract
The hydrogen evolution potential and hydrogen embrittlement region of X70 steel in 3% (mass fraction) NaCl solution were determined by polarization curve test and slow strain rate test. The relationship between cathodic polarization degree and hydrogen embrittlement was illustrated by electrochemical impedance spectroscopy. The results show that the potential of hydrogen evolution reaction for X70 steel in 3%NaCl solution was -1.0 V. With the increase of cathodic polarization degree, the hydrogen embrittlement sensitivity increased, because the charge transfer resistance decreased, which promoted the formation of adsorbed hydrogen.
中图分类号 TE8 DOI 10.11973/fsyfh-201906007
所属栏目 试验研究
基金项目 第三批重庆市高等学校青年骨干教师资助计划项目"低Cr合金钢在含高O2天然气管道顶部CO2电化学腐蚀机理研究"
收稿日期 2018/10/22
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联系人作者鲁群岷(luqm@qq.com)
引用该论文: YUE Bo,LU Qunmin. Hydrogen Embrittlement of X70 Steel under Cathodic Protection[J]. Corrosion & Protection, 2019, 40(6): 424
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参考文献
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【11】曹楚南. 腐蚀电化学原理. 北京:化学工业出版社, 2008.
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【16】CÁCERES L, VARGAS T, HERRERA L. Influence of pitting and iron oxide formation during corrosion of carbon steel in unbuffered NaCl solutions. Corrosion Science, 2009, 51(5):971-978.
【2】BARKER J C. Data surveys of hydrogen assisted cracking in high strength jack-up steels. London:the Health and Safety Executive, 1998.
【3】郑文龙,于青.钢的环境敏感断裂.北京:化学工业出版社,1988.
【4】CAPELLE J, DMYTRAKH I, PLUVINAGE G. Comparative assessment of electrochemical hydrogen absorption by pipeline steels with different strength. Corrosion Science, 2010, 52(5):1554-1559.
【5】Control of external corrosion on underground or submerged metallic piping systems:NACE SP 0169-2007. Huston, Texas:NACE International, 2007.
【6】Petroleum, petrochemical and natural gas industries-cathodic protection of pipeline transportation systems-part 2:offshore pipelines:ISO 15589-2:2012,. Geneva, Switzerland:International Organization for Standardization,2012.
【7】Cathodic protection of submarine pipelines by galvanic anodes:DNV-RP-F103-2012. Oslo:DNV, 2012.
【8】PHILIPPE L V S, LYON S B, SAMMON C, et al. Validation of electrochemical impedance measurements for water sorption into epoxy coatings using gravimetry and infra-red spectroscopy. Corrosion Science, 2008, 50(3):887-896.
【9】XU L Y, SU X, YIN Z X, et al. Development of a real-time AC/DC data acquisition technique for studies of AC corrosion of pipelines. Corrosion Science, 2012, 61:215-223.
【10】刘玉. X80管线钢在模拟深海环境下的阴极保护及其氢脆敏感性研究. 东营:中国石油大学(华东), 2014.
【11】曹楚南. 腐蚀电化学原理. 北京:化学工业出版社, 2008.
【12】刘玉, 李焰, 李强. 阴极极化对X80管线钢在模拟深海条件下氢脆敏感性的影响. 金属学报, 2013, 49(9):1089-1097.
【13】崔忠圻,覃耀春. 金属学与热处理.北京:机械工业出版社,2007.
【14】陈祥曦.阴极极化对海洋工程用钢及其焊缝氢脆敏感性影响的研究.青岛:青岛科技大学,2015.
【15】HOSEINIEH S M, HOMBORG A M, SHAHRABI T, et al. A novel approach for the evaluation of under deposit corrosion in marine environments using combined analysis by electrochemical impedance spectroscopy and electrochemical noise. Electrochimica Acta, 2016, 217:226-241
【16】CÁCERES L, VARGAS T, HERRERA L. Influence of pitting and iron oxide formation during corrosion of carbon steel in unbuffered NaCl solutions. Corrosion Science, 2009, 51(5):971-978.
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