Effects of Time, pH and Cl- Concentration on Electrochemical Corrosion Behavior of Filmed Pipeline Steels
摘 要
采用极化曲线和EIS技术研究了时间、pH和Cl-对既成膜管线钢X65和X70腐蚀电化学行为的影响。结果表明,两种既成膜管线钢的电化学阻抗谱均由高频容抗和低频感抗组成,含两个时间常数; 各条件下形成的既成膜覆盖度较高但致密性不好,发生进一步活性溶解有限; 时间、pH和Cl-对腐蚀电化学行为的影响与既成膜的特性密切相关,当成膜充分且无内应力破裂时,既成膜X70钢比X65更难发生进一步腐蚀,且对Cl-浓度变化不敏感。
Abstract
Polarization curves and electrochemical impedance spectroscopy (EIS) were used to study the effects of time, pH and Cl- concentration on electrochemical corrosion behavior of filmed X65 and X70 steels. The investigation indicated that Nyquist diagrams of both the filmed pipeline steels included a high frequency capacitive loop and a low inductive arc, implying two time constants. The coverage of film formed under different conditions was extremely good, but its density was poor, and the occurrence of its further active dissolution was limited. Effects of time, pH and Cl- concentration on corrosion electrochemical behavior were closely related to the film characteristics, the filmed X70 steel with a full and none stress rupture film would be more difficult to suffer further corrosion and was less sensitive to Cl- concentrations than X65.
中图分类号 TG174.4
所属栏目 试验研究
基金项目 国家自然科学基金 (51174171)
收稿日期 2014/4/1
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备注吴红梅(1987-),硕士研究生,从事油气田材料的腐蚀与防护研究,
引用该论文: WANG Xia,WU Hong-mei,HOU Duo,LI Hou-guo,YU Liu-si. Effects of Time, pH and Cl- Concentration on Electrochemical Corrosion Behavior of Filmed Pipeline Steels[J]. Corrosion & Protection, 2014, 35(11): 1087
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参考文献
【1】KERMANI M B,MORSHED A. Carbon dioxide corrosion in oil and gas production-a compendium[J]. Corrosion,2003,59(8):659-683.
【2】KINSELLA B,TAN Y J,BAILEY S. Electrochemical impedance spectroscopy and surface characterization techniques to study carbon dioxide corrosion product scales[J]. Corrosion,1998,54(10):835-842.
【3】俞芳,高克玮,乔利杰,等. 温度对X65管线钢CO2腐蚀产物膜结构和力学性能的影响[J]. 机械强度,2004,26(S):36-38.
【4】张伟卫,蔡庆伍,武会宾,等. 影响鞍钢X70管线钢CO2腐蚀行为的环境因素和材料因素[J]. 腐蚀与防护,2008,29(7):268-371.
【5】李红英,康巍,胡继东,等. X70和X80管线钢的电化学腐蚀行为[J]. 材料热处理学报,2011,32(10):151-158.
【6】周琦,何力力,南雪丽,等. 油气输送管线钢在CO2酸性溶液中的腐蚀行为[J]. 材料开发与应用,2005,20(5):21-24.
【7】HARA T,ASAHI H,KAWAKAMI A. Effect of alloying elements on carbon dioxide corrosion in 13% to 20% chromium containing steels[J]. Corrosion,2000,56(4):419-428.
【8】陈长风,路民旭,赵国仙,等. N80钢腐蚀电极过程交流阻抗分析[J]. 金属学报,2002,38(7):770-774.
【9】张均生,武会宾,王立东,等. 温度对X80管线钢CO2腐蚀行为的影响[J]. 热加工工艺,2012,41(14):19-22.
【10】陈长风,路民旭,赵国仙,等. 温度、Cl-浓度、Cr元素对钢腐蚀电极过程的影响[J]. 金属学报,2003,39(8):848-854.
【2】KINSELLA B,TAN Y J,BAILEY S. Electrochemical impedance spectroscopy and surface characterization techniques to study carbon dioxide corrosion product scales[J]. Corrosion,1998,54(10):835-842.
【3】俞芳,高克玮,乔利杰,等. 温度对X65管线钢CO2腐蚀产物膜结构和力学性能的影响[J]. 机械强度,2004,26(S):36-38.
【4】张伟卫,蔡庆伍,武会宾,等. 影响鞍钢X70管线钢CO2腐蚀行为的环境因素和材料因素[J]. 腐蚀与防护,2008,29(7):268-371.
【5】李红英,康巍,胡继东,等. X70和X80管线钢的电化学腐蚀行为[J]. 材料热处理学报,2011,32(10):151-158.
【6】周琦,何力力,南雪丽,等. 油气输送管线钢在CO2酸性溶液中的腐蚀行为[J]. 材料开发与应用,2005,20(5):21-24.
【7】HARA T,ASAHI H,KAWAKAMI A. Effect of alloying elements on carbon dioxide corrosion in 13% to 20% chromium containing steels[J]. Corrosion,2000,56(4):419-428.
【8】陈长风,路民旭,赵国仙,等. N80钢腐蚀电极过程交流阻抗分析[J]. 金属学报,2002,38(7):770-774.
【9】张均生,武会宾,王立东,等. 温度对X80管线钢CO2腐蚀行为的影响[J]. 热加工工艺,2012,41(14):19-22.
【10】陈长风,路民旭,赵国仙,等. 温度、Cl-浓度、Cr元素对钢腐蚀电极过程的影响[J]. 金属学报,2003,39(8):848-854.
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