重庆大学学报2017，Vol.40Issue(6)：26-35,10.DOI:10.11835/j.issn.1000-582X.2017.06.004
电力输电杆塔用Q235钢聚硅氧烷复合涂层的大气腐蚀行为
Corrosion behavior of Q235 steel with polysiloxane composite coating in different environment
摘要
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.关键词
聚硅氧烷/腐蚀行为/大气环境/电化学方法Key words
polysiloxane/corrosion behavior/atmospheric environment/electrochemical method分类
化学化工引用本文复制引用
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,2017,40(6):26-35,10.基金项目
科研横向资助项目(SGCQDKOOPJJS140069).Supported by non-government sponsored science and technology project(SGCQDKOOPJJS140069). （SGCQDKOOPJJS140069）
