| Ag/AgCl微电极束的制作及其原位检测焊缝局部腐蚀的效果 |
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| 引用本文： | 高璐璐,张有慧,曹令华,李成杰,杜敏.Ag/AgCl微电极束的制作及其原位检测焊缝局部腐蚀的效果[J].材料保护,2012(5):63-65,88. |
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| 作者姓名： | 高璐璐 张有慧 曹令华 李成杰 杜敏 |
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| 作者单位： | 中国海洋大学化学化工学院 海洋化学理论与工程技术教育部重点实验室;海洋石油工程(青岛)有限公司 |
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| 基金项目： | 国家科技重大专项子任务(2008ZX05027-004-003-004) |
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| 摘 要： | 金属焊接件焊缝处易优先发生腐蚀,单个微电极难以测量焊接件同一时刻、不同位置的局部腐蚀行为。自制了Ag/AgCl微电极束,用其测试了X80钢焊接件在天然海水和模拟的咸淡水(0.1 mol/L NaCl溶液)中以及X65-316L焊接件在模拟的酸性海洋大气环境(0.1 mol/L,pH=2的NaCl溶液)中的电位分布,预测了焊材的局部腐蚀行为。结果表明:制作的Ag/AgCl微电极束性能稳定,用其测定X80焊接件和X65-316L焊接件在不同环境中的电位分布,可准确推测腐蚀发生的位置。
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| 关 键 词： | 局部腐蚀 焊缝 微电极束 检测 |
Fabrication of Silver/Silver Chloride Microelectrode Bundle and Its Use for In-Situ Monitoring of Localized Corrosion of Welded Steel |
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| GAO Lu-lu,ZHANG You-hui,CAO Ling-hua,LI Cheng-jie,DU Min.Fabrication of Silver/Silver Chloride Microelectrode Bundle and Its Use for In-Situ Monitoring of Localized Corrosion of Welded Steel[J].Journal of Materials Protection,2012(5):63-65,88. |
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| Authors: | GAO Lu-lu ZHANG You-hui CAO Ling-hua LI Cheng-jie DU Min |
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| Affiliation: | 1(1.Key Laboratory of Ministry of Education for Marine Chemistry Theory and Technology,College of Chemistry and Chemical Engineering,Ocean University of China,Qingdao 266100,China;2.Offshore Oil Engineering(Qingdao) Company Ltd.,Qingdao 266520,China) |
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| Abstract: | Ag/AgCl microelectrode bundle was fabricated and used to monitor the potential distribution of welded X80 steel ware in natural seawater and in simulated saline water(0.1 mol/L NaCl solution),as well as the potential distribution of welded X65-316L ware in simulated acidic marine environment(0.1 mol/L NaCl solution,pH=2).The localized corrosion behavior of the welded steel wares was forecasted.Results show that as-fabricated Ag/AgCl microelectrode bundle with stable perfor-mance can be well used to monitor the potential distribution of welded X80 and X65-316L under different environments,and accurately detect the locations of welded metal wares where loca-lized corrosion preferentially occurs. |
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| Keywords: | localized corrosion welded joint microelectrode bundle monitoring |
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