Q235钢在含硝酸根离子土壤中的腐蚀行为  

The Corrosion Behaviors of Q235 Steel in Soil with NO_3^- Ions

作　　者：伍远辉[1] 勾华[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：《华侨大学学报（自然科学版）》2009年第3期277-279,共3页Journal of Huaqiao University(Natural Science)

基　　金：贵州省教育厅自然科学研究重点资助项目(黔教科2005118);遵义市科技计划项目(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Q235钢在含硝酸根离子土壤中的腐蚀行为.实验结果表明,硝酸根对Q235钢腐蚀的影响显著.Q235钢的腐蚀速率随土壤中硝酸根的质量分数的增加而增加,当硝酸根的质量分数增加到0.89%时,腐蚀速率达到最大;然后,腐蚀速率随着硝酸根质量分数的增加而有所减小.The corrosion behaviors of Q235 steel in soil with NO3^- ions were studied by using polarization curve teehnique and electrochemical impedance spectroscopy （EIS）. It was found that NO3^- ions obviously affected the corrosion behavior of Q235 steel. The corrosion rate of Q235 steel increased with the increase of mass fraction of NOa ions in soil. As the mass fraction of NO3^- ion increased to 0. 89%, the corrosion rate was the fastest. Then the corrosion rate deer eased gradually with the increase of the mass fraction of NO3^- ion.

关 键 词：Q235钢 硝酸根离子 土壤腐蚀 极化曲线 电化学阻抗 

分 类 号：TG172.4[金属学及工艺—金属表面处理]