十二烷基硫醇对铜的缓蚀作用  

Inhibition Effect of 1-Dodecanethiol on Copper Corrosion

作　　者：张静 赵永武 

机构地区：[1]江南大学机械工程学院,江苏无锡214122

出　　处：《江南大学学报（自然科学版）》2008年第6期688-691,共4页Joural of Jiangnan University (Natural Science Edition)　

基　　金：江苏省自然科学基金项目(BK2004020);教育部重点项目(教外字[2006]233号);教育部回国人员启动基金项目(教外字留[2004]527号);清华大学摩擦学国家重点实验室开放基金项目(SKLT04-06)

摘　　要：利用自组装方法在铜表面制备十二烷基硫醇单层膜,采用失重法、电化学极化曲线法和交流阻抗法,研究在不同成膜时间条件下得到的自组装膜在0.51 mol/L的NaCl溶液中对铜的缓蚀作用.实验结果表明:十二烷基硫醇膜对铜具有较好的缓蚀作用,经自组装处理后铜电极在NaCl溶液中电荷传递的电阻增大,腐蚀电流密度下降.该膜对腐蚀反应的阴极过程具有更强的阻碍作用,在吸附时间为30 min时,可产生较好的缓蚀效果.The self-assembled monolayers of 1-dodecanethiol were formed on copper surface in different time periods. The corrosive inhibition performances of these films were investigated by weight-loss measurement, electrochemical polarization curves and electrochemical impedance spectroscopy in 0.51 mol/L NaCl solution. The results show that the formed films can effectively retard both the cathodic and the anodic reaction of the corrosion of copper, leading to a higher charge transfer resistance and a lower corrosion rate. Both anodic and cathodic corrosion currents were reduced for the copper treated with 1-dodecanethiol. It is also indicated that the cathodic current was decreased more significantly than the anodic current.

关 键 词：铜 十二烷基硫醇 缓蚀 

分 类 号：TG174.42[金属学及工艺—金属表面处理]