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/ H2SO4体系电流振荡现象的影响. 结果表明, 这些因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/H2SO4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 Cl->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.
参考文献
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