动态海水温度对Al-Zn-In-Mg-Ti牺牲阳极性能的影响

Influence of Temperature on Performance of Al-Zn-In-Mg-Ti Sacrificial Anode in Dynamic Seawater

采用恒电流法、电化学阻抗谱并结合表面形貌观察研究了动态海水中温度对Al-Zn-In-Mg-Ti牺牲阳极电化学性能的影响,并与静态条件下测试结果进行比较。结果显示,随着海水温度降低,Al-Zn-In-Mg-Ti阳极试样的开路电位和工作电位负移,电化学容量增大,电流效率升高,溶解形貌更好;温度相同时,动态海水中Al-Zn-In-Mg-Ti阳极试样的开路电位、工作电位较静态条件下正移,电化学容量及电流效率下降,溶解形貌稍差。

The influence of temperature on performance of AI-Zn-In-MgTi sacrificial anode was studied in dynamic seawater using constant current control, electrochemical impedance spectroscopy （EIS） and surface morphology observation in comparison with the results in static seawater. The results showed that with temperature decreasing, the open-circuit and working potentials of the anode gradually became negative, but the electrochemical capacity and current efficiency increased, dissolution morphology became better. At the same temperature, the open circuit potential and working potential in dynamic seawater moved positively, electrochemical capacity and current efficiency decreased, dissolution morphology was poorer in comparison with the results in static seawater.