| 镁合金与Q235钢在罐底水溶液下的电偶腐蚀行为 |
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| 引用本文： | 李卓远,谢飞,吴明,孙东旭,赵志龙. 镁合金与Q235钢在罐底水溶液下的电偶腐蚀行为[J]. 石油化工高等学校学报, 2021, 34(3): 76-83. DOI: 10.3969/j.issn.1006-396X.2021.03.012 |
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| 作者姓名： | 李卓远 谢飞 吴明 孙东旭 赵志龙 |
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| 作者单位： | 1. 辽宁石油化工大学 石油天然气工程学院，辽宁 抚顺 113001； 2.中国石油抚顺石化公司 石油二厂，辽宁 抚顺 113001 |
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| 基金项目： | 国家自然科学基金资助项目（51604150）；辽宁省“兴辽英才计划”项目资助(XLYC1807260)；辽宁省自然科学基金联合基金计划（2020-HYLH?14）。 |
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| 摘 要： | 利用浸泡实验、电化学测试和微观形貌观测研究大榭油库罐底水模拟溶液下镁合金与Q235钢体系的电偶腐蚀行为,对比研究不同Sc/Sa (阴/阳极面积比)对镁合金/Q235钢电偶腐蚀的影响,探明Sc/Sa与腐蚀速率的关系,并拟合成曲线和表达式.结果表明,当电极阴极面积不变时,随着Sc/Sa的增加,镁合金阳极的腐蚀速率大幅度增加...
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| 关 键 词： | 牺牲阳极保护 罐底腐蚀 Q235钢 镁合金 |
| 收稿时间： | 2021-01-02 |
Galvanic Corrosion Behavior of Magnesium Alloy and Q235 Steel in Bottom Water Solution |
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| Li Zhuoyuan,Xie Fei,Wu Ming,Sun Dongxu,Zhao Zhilong. Galvanic Corrosion Behavior of Magnesium Alloy and Q235 Steel in Bottom Water Solution[J]. Journal of Petrochemical Universities, 2021, 34(3): 76-83. DOI: 10.3969/j.issn.1006-396X.2021.03.012 |
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| Authors: | Li Zhuoyuan Xie Fei Wu Ming Sun Dongxu Zhao Zhilong |
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| Affiliation: | 1.College of Petroleum and Natural Gas Engineering，Liaoning Petrochemical University，Fushun Liaoning 113001，China； 2.PetroChina Fushun Petrochemical Company No.2 Refinery，Fushun Liaoning 113001，China |
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| Abstract: | The galvanic corrosion behavior of magnesium alloy and Q235 steel system different Sc/Sa(negative / anode area ratio) in simulated solution of tank bottom water in Daxie oil depot was studied by immersion experiment, electrochemical test and micro morphology observation method. The impact of different Sc/Sa on corrosion rate was found out, which curve and expression were fitted. The results show that, the corrosion rate of magnesium alloy anode increases greatly with the increasing of Sc/Sa, but the increasing of corrosion rate for the negative part is not obvious. Based on the galvanic current image, the galvanic current fluctuates and decreases with time. When Sc/Sa is 1.0 or 2.0, the galvanic current decreases obviously, which does not decrease obviously when Sc/Sa is 0.5. The corrosion rate is calculated by galvanic current. It is demonstrated that the galvanic current, as well as the corrosion degree increases linearly with the increase of Sc/Sa. |
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| Keywords: | Anodic sacrifice protection Tank bottom corrosion Q235 steel Magnesium alloy |
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