| 温度对X90管线钢及其焊缝电化学腐蚀性能的影响 |
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| 引用本文： | 温宁华,吕海霞,王毛毛,范希良,李大朋.温度对X90管线钢及其焊缝电化学腐蚀性能的影响[J].材料保护,2019,52(3):60-63. |
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| 作者姓名： | 温宁华 吕海霞 王毛毛 范希良 李大朋 |
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| 作者单位： | 安科工程技术研究院(北京)有限公司,北京,100083;中国石油长庆油田分公司第一采气厂,陕西靖边,718500;中国石油长庆油田分公司油气工艺研究院,陕西西安710018;低渗透油气田勘探开发国家工程实验室,陕西西安710018 |
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| 摘 要： | 为了明确X90钢的腐蚀变化规律,利用电化学阻抗技术(EIS)和动电位极化测试技术,研究了X90管线钢母材及其焊缝在不同温度下的电化学腐蚀行为。结果表明:在不同温度下,随着温度的升高,X90管线钢母材及其焊缝越容易发生腐蚀,电化学阻抗逐渐减小;母材与焊缝相比,焊缝在溶液中更容易发生腐蚀,且电化学阻抗值小于母材的。
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| 关 键 词： | X90管线钢 焊缝 电化学阻抗 温度 |
Effect of Temperature on Electrochemical Corrosion Behavior of X90 Pipeline Steel and Its Welds |
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| WEN Ning-hua,LYU Hai-xia,WANG Mao-mao,FAN Xi -liang,LI Da-peng.Effect of Temperature on Electrochemical Corrosion Behavior of X90 Pipeline Steel and Its Welds[J].Journal of Materials Protection,2019,52(3):60-63. |
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| Authors: | WEN Ning-hua LYU Hai-xia WANG Mao-mao FAN Xi -liang LI Da-peng |
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| Affiliation: | (Anke Engineering Technology Research Institute ( Beijing) Co., Ltd., Beijing 100083,China;The 1th Gas Production of PetroChina Changqing Oilfield Company, Jingbian 718500,China;Oil & Gas Technology Research Institute of Changqing Oilfield Company, Xi'an 710018,China;National Engineering Laboratory of Low Penneability Oil-Gas Field Exploration and Development, Xi'an 710018,China) |
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| Abstract: | In order to study the corrosion variation law of X90 steel,the electrochemical corrosion behaviors of the base alloy and weld material of X90 steel at different temperatures were studied by means of the electrochemical impedance spectroscopy( EIS) and polarization curves. Results showed when the temperature was improved,the corrosion of X90 pipeline steel and its weld occurred more easily,and the electrochemical impedance decreased gradually. Meanwhile,in the comparison of the base alloy,the weld metal was easier to be corroded in the solution,and the electrochemical impedance was smaller than that of the base metal. |
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| Keywords: | X90 pipeline steel weld electrochemical impedance temperature |
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