碳钢阳极电溶解中的电化学振荡现象  

Electrochemical Oscillatory Phenomena in Anodic Electrodissolution of Carbon Steel

作　　者：钟静萍[1] 樊友军[1] 曾建强[1] 

机构地区：[1]广西师范大学化学化工学院药用资源化学与药物分子工程教育部重点实验室,桂林541004

出　　处：《腐蚀科学与防护技术》2011年第6期500-504,共5页Corrosion Science and Protection Technology

基　　金：教育部留学回国人员科研启动基金;广西自然科学基金项目(0991093);广西自然科学基金创新团队项目(2010GXNSFF013001);广西教育厅科研项目(201012MS024)资助

摘　　要：采用线性扫描伏安法和恒电位法研究了扫描速率、电解质浓度以及卤素离子的种类和浓度等对碳钢/H_2SO_4体系电流振荡现象的影响.结果表明,这些冈素均对该体系的电流振荡产生明显影响.不同卤素离子对碳钢/H_2SO_4体系电流振荡动力学行为影响的强弱顺序为:Cl^->Br^->I^-.恒电位极化测试显示,卤素离子存在时碳钢阳极电溶解中可以产生单周期振荡和非周期性混沌振荡模式,且添加的卤素离子不同,对振荡类型的影响不同.The effect of scan rate, electrolyte concentration, the type and concentration of halide ions on the current oscillations of carbon steel/H2SO4 system was investigated by linear scan voltammetry and potentiostatic method. The results demonstrated that these factors obviously affected current oscillations of the system. The influence of different halide ions on the current oscillations kinetics of carbon steel/H2SO4 system generated a decreasing order of C1- 〉Br- 〉I-. Potentiostatic polarization tests indicated that the different current oscillations, such as monoperiodic mode and nonperiodic chaotic oscillations, could occur in the anodic electrodissolution of carbon steel due to the existence of halide ions, and the addition of different halide ions affected the types of oscillation.

关 键 词：碳钢 阳极电溶解 电化学振荡 线性扫描伏安法 恒电位极化 

分 类 号：O646[理学—物理化学] O647[理学—化学]