| 合金在湿法磷酸介质中的电化学阻抗谱研究 |
| |
| 引用本文： | 彭冰,刘小光.合金在湿法磷酸介质中的电化学阻抗谱研究[J].北京化工大学学报(自然科学版),1995,22(1):59-66. |
| |
| 作者姓名： | 彭冰 刘小光 |
| |
| 作者单位： | 北京化工大学应用化学系，深圳市市政建设公司清洗公司 |
| |
| 摘 要： | 采用电化学阻抗谱研究ＵＢ６合金和Ｊ—１合金在湿法磷酸料浆介质中的冲刷腐蚀行为．测定了不同温度，不同转速，不同Ｃｌ－和Ｆ－浓度，不同电位下的阻抗谱．钝化区的阻抗谱呈单一的容抗弧。增加电极的旋转速度和对试件进行高速喷射只降低极化电阻的数值，而不改变阻抗图谱的性质．说明冲刷作用并未改变电极的腐蚀历程和溶解机制．增加［Ｃｌ－］和［Ｆ－］均降低界面电容和极化电阻，但［Ｃｌ－］对电容的影响大，而［Ｆ－］对极化电阻的影响大．说明［Ｃｌ－］的吸附作用大于［Ｆ－］，而对钝化膜的溶解破坏作用又比［Ｆ－］小．
|
| 关 键 词： | 湿法磷酸介质 电化学阻抗谱 合金 腐蚀 |
A Study on Electrochemical Impedance Spectrogroph of Alloys in Wet Phosphoric Acid Media |
| |
| Peng Bing, Liu Xiaoguang, Yu Fuzhou.A Study on Electrochemical Impedance Spectrogroph of Alloys in Wet Phosphoric Acid Media[J].Journal of Beijing University of Chemical Technology,1995,22(1):59-66. |
| |
| Authors: | Peng Bing Liu Xiaoguang Yu Fuzhou |
| |
| Abstract: | The present paper studies erosion corrosion of UB6 alloy and J-1 alloy in wet phosphoric acid (WPA) slurry by using Electrochemical Impedance Spectrograph (EIS)measurement. A single capaciatant semicircle is observed in passive region. Increasing rotating relocity does not change the characteristics of EIS, except changing the value of polarization resistance. The addition of Cl-] and F-] decreases bath polarization resistance and capacitance. however, the effect of F-] on Rp is greater than that of Cl-], while the effect of Cl-] on Cp is greater than that of F-]. It is indicated that Cl-] has stronger adsorption, while F-] has stronger dissolution of passive film. |
| |
| Keywords: | wet phosphoric acid A C impedance UB6 alloy |
| 本文献已被 CNKI 维普 等数据库收录！ |
