SO4^2-对Q235钢在土壤中腐蚀行为影响的电化学研究  

Effects of SO_4^(2-) Ions on Corrosion Behavior of Q235 Steel in Soil

作　　者：刘焱[1] 伍远辉[1] 罗宿星[1] 

机构地区：[1]遵义师范学院化学系,贵州遵义563002

出　　处：《西南大学学报（自然科学版）》2008年第7期74-77,共4页Journal of Southwest 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);遵义市科技局资助项目(遵市科合社字(2007)24号)

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SO42-对Q235钢在土壤中腐蚀行为的影响.实验结果表明,SO42-对Q235钢腐蚀的影响显著.随土壤中SO42-含量的增加,Q235钢在土壤中的腐蚀速率一直增加.当SO42-含量增加到一定含量后,Q235钢的腐蚀速率随土壤中SO42-含量的增加而大幅度地增加.Q235钢在高SO42-含量的土壤中腐蚀速率快.The effects of SO4^2- ions on corrosion of Q235 steel in soil collected from Guizhou were studied by using the polarization curve technique and electrochemical impedance spectroscopy （EIS）. It was found that SO4^2- ions obviously affected the corrosion behavior of Q235 steel. The corrosion rate of Q235 steel steadily increased with SO4^2- ion content in the soil. When SO4^2- content increased to a certain point, Q235 steel corrosion increased sharply. Corrosion rate of Q235 steel was very great in soils with high SO4^2- contents.

关 键 词：Q235钢 SO4^2- 土壤腐蚀 

分 类 号：O657.1[理学—分析化学]