摘要
制作了水工金属结构埋件模型,研究不同种类牺牲阳极和外加电流方法对埋件的保护作用,以寻找切实可行的水工金属结构埋件长效保护方案。结果表明:采用牺牲阳极法进行阴极保护,当溶液电导率为2000μS/cm时,镁合金对水工金属结构埋件的保护距离可达到100cm,具有较好的保护效果;铝合金和锌合金由于表面钝化作用,对水工金属结构埋件起不到保护作用。恒电位极化方法可在不同电导率情况下对埋件起到较好的保护效果。
Models of embedded parts of hydraulic metal structures were made,and the protection effects of different types of sacrificial anodes and external current methods on the embedded parts were studied as to find a practical longterm protection scheme for embedded parts of hydraulic metal structures.The results show that when the sacrificial anode method was used for cathodic protection,and the solution conductivity was 2 000μS/cm,the protection distance of magnesium alloy to the buried parts of hydraulic metal structure could reach a distance of 100 cm,which had a relatively good protection effect.Due to the surface passivation effect,zinc alloys and aluminum alloys could not protect the buried parts of hydraulic metal structures.Potentiostatic polarization method can provide relatively good protection for embedded parts under different conductivity conditions.
作者
贾新杰
王占华
史泽波
JIA Xinjie;WANG Zhanhua;SHI Zebo(China Construction Seventh Bureau Instrallation Engineering Co.,Ltd.,Zhengzhou 450045,China;National Center of Quality Inspection and Testing for Hydro Steel Structure,The Ministry of Water Resource PRC,Zhengzhou 450045,China)
出处
《腐蚀与防护》
CAS
北大核心
2020年第1期47-49,57,共4页
Corrosion & Protection
基金
水利部综合事业局拔尖人才培养专项资金研究项目[豫科2016-211号-高新35]。
关键词
水工金属埋件
镁阳极
锌阳极
铝阳极
恒电位极化
embedded part of hydro-steel structure
magnesium anode
zinc anode
aluminum anode
potentiostatic polarization
