| 电力输电杆塔用Q235钢聚硅氧烷复合涂层的大气腐蚀行为 |
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| 引用本文： | 李勇,龙英凯,姚强,杨文静,黎学明,黄馨月,王雄英. 电力输电杆塔用Q235钢聚硅氧烷复合涂层的大气腐蚀行为[J]. 重庆大学学报(自然科学版), 2017, 40(6): 26-35. DOI: 10.11835/j.issn.1000-582X.2017.06.004 |
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| 作者姓名： | 李勇 龙英凯 姚强 杨文静 黎学明 黄馨月 王雄英 |
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| 作者单位： | 1. 国网重庆市电力公司电力科学研究院,重庆,401123;2. 重庆大学化学化工学院,重庆,401331 |
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| 基金项目： | 科研横向资助项目（SGCQDKOOPJJS140069）。 |
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| 摘 要： | 采用喷涂法在Q235钢表面涂覆聚硅氧烷复合涂层,在重工业污染区、人口密集区、一般工业区、乡村定居区4个220kV变电站大气环境中自然暴露15个月,采用伏安法、交流阻抗法等研究其腐蚀行为。结果表明,重工业污染区变电站的腐蚀电流密度从3.849 5×10~(-12) A/cm~2增加到15个月的2.257 2×10~(-10) A/cm~2;而人口密集区变电站的腐蚀电流密度值先从1.640 1×10~(-10) A/cm~2降低到6个月的5.736 5×10~(-11) A/cm~2,后增加到15个月的3.929 9×10~(-10) A/cm~2。结合自腐蚀电位和涂层阻抗,聚硅氧烷复合涂层在不同环境中耐蚀性顺序为:人口密集区乡村定居区一般工业区重工业污染区。
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| 关 键 词： | 聚硅氧烷 腐蚀行为 大气环境 电化学方法 |
| 收稿时间： | 2017-01-08 |
Corrosion behavior of Q235 steel with polysiloxane composite coating in different environment |
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| LI Yong,LONG Yingkai,YAO Qiang,YANG Wenjing,LI Xueming,HUANG Xinyue and WANG Xiongying. Corrosion behavior of Q235 steel with polysiloxane composite coating in different environment[J]. Journal of Chongqing University(Natural Science Edition), 2017, 40(6): 26-35. DOI: 10.11835/j.issn.1000-582X.2017.06.004 |
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| Authors: | LI Yong LONG Yingkai YAO Qiang YANG Wenjing LI Xueming HUANG Xinyue WANG Xiongying |
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| Affiliation: | State Grid Chongqing Electric Power Co. Electric Power Research Institute, Chongqing 401123, P. R. China,State Grid Chongqing Electric Power Co. Electric Power Research Institute, Chongqing 401123, P. R. China,State Grid Chongqing Electric Power Co. Electric Power Research Institute, Chongqing 401123, P. R. China,College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, P. R. China,College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, P. R. China,College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, P. R. China and College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, P. R. China |
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| Abstract: | Polysiloxane composite coating was coated on the surface of Q235 steel through sparying method,and the samples were corroded by atmospheric exposure test in four 220 kV transformer substations (heavy pollution area,densely populated area,general industrial area,rural settlements area) for 15 months respectively.The corrosion behavior was investigated by Tafel polarization curve and electrochemical impedance spectroscopy (EIS) test.The results show that the corrosion current density increases from 3.849 5×10-12 A/cm2 to 2.257 2×10-10 A/cm2 with the extension of time in the densely populated area.The corrosion current density decreases from 1.640 1×10-10 A/cm2 to 5.736 5×10-11 A/cm2,and then increases to 3.929 9×10-10 A/cm2 in the densely populated area which shows the best anticorrosion ability.Combined with the self corrosion potential and coating resistance,the order of anticorrosion ability in different environment is as follow:densely populated area > rural settlements area > general industrial area > heavy pollution area. |
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| Keywords: | polysiloxane corrosion behavior atmospheric environment electrochemical method |
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