摘要
使用交流阻抗方法研究了缓蚀剂阳极脱附对电化学阻抗谱及电化学界面参数的影响。在脱附电位附近，缓蚀剂阳极脱附使铁阳极过程阻抗响应中产生一附加感抗。界面电容在外加电位低于脱附电位时保持不变，达到脱附电位后迅速增加。电荷迁移电阻随电位正移逐渐降低，达到脱附电位后降至很小数值并减缓变化。弥散效应系数则随电位正移大体线性增加，与脱附电位无明显相关性。依据缓蚀剂在脱附电位Ｅｄｅｓ附近发生阳极脱附讨论了上述实验结果。
The effects of inhibitor desorption on electrochemical impedance spectra and interfacial electrochemical parameters were studied using A. C. impedance measurements. It was found that on the complex plan diagram the characteristics of inhibitor desorption showed the appearance of an inductive loop as the applied potential approached the desorption potential Edes. The double layer capacitance was kept unchanged in the range of potentials lower than the desorption potential, and increased rapidly as the potential reached the desorption potential. The charge transfer resistance decreased gradually with increasing potential, and reached a relatively small value at the Edes. At the same time, however, the dispersion coefficient continuously increased. Based on the consideration of inhibitor desorption, the above mentioned results were discussed.
出处
《中国腐蚀与防护学报》
CAS
CSCD
1995年第4期247-253,共7页
Journal of Chinese Society For Corrosion and Protection
基金
国家自然科学基金
关键词
缓蚀剂
脱附
电化学阻抗谱
电容
脱附电位
阳极
Inhibitors, Desorption, Desorption potential, Electrochemical Impedance Spectra,Double layer capacitance
