CO3^2-对Q235钢在土壤中腐蚀行为的影响  

Effects of CO_3^(2-) Ions on Corrosion Behavior of Q235 Steel in Soil

作　　者：伍远辉[1] 罗宿星[2] 勾华[2] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400045 [2]遵义师范学院化学系,贵州遵义563002

出　　处：《信阳师范学院学报（自然科学版）》2008年第1期122-124,共3页Journal of Xinyang Normal University(Natural Science Edition)

基　　金：贵州省教育厅自然科学研究重点资助项目(黔教科2005118)

摘　　要：利用极化曲线技术、电化学阻抗测试技术等方法,研究了CO32-对Q235钢在土壤中腐蚀行为的影响.实验结果表明,CO32-对Q235钢腐蚀的影响显著.Q235钢的腐蚀速率随土壤中CO32-含量的增加,Q235钢在土壤中的腐蚀速率也增加,当CO32-的质量百分含量增加到0.28%时,腐蚀速率达到最大,然后腐蚀速率随着CO32-含量增加而减小,最后趋于一稳定值15μA.cm-2左右.The effects of CO3^2- ions on corrosion of Q235 steel in Guizhou soil were studied by using polarization curve technique and electrochemical impedance spectroscopy （EIS）. The soil was collected from the city of Zunyi. It was found that CO3^2 - ions obviously affected the corrosion behavior of Q235 steel. When the content of CO3^2ions in the soil increased, the corrosion rate of Q235 steel increased. As the content of CO3^2- ions was 0.28% ,the corrosion rate was the fastest. Then the corrosion rate would decrease with the increase of the content of CO3^2- ions, finally it tended to a stable value about 15μA · cm^-2.

关 键 词：Q235钢 CO3^2- 土壤 腐蚀 

分 类 号：TG172.4[金属学及工艺—金属表面处理]