Ni-Mo-C合金的电沉积行为及成核机制

Electrodeposition Behavior and Nucleation Mechanism of Ni-Mo-C Alloy

采用循环伏安、阴极极化曲线、旋转圆盘电极、电化学阻抗谱、计时电流等方法研究了Ni-Mo-C合金的电沉积行为及成核机制。结果表明:Ni-Mo-C合金的电沉积过程存在成核行为;电极反应是一个不可逆过程;随电极电位增大,电极反应速率加快;合金的成核机制从连续成核转变为瞬时成核,合金的沉积受扩散控制程度较大。

Electrodeposition behavior and nucleation mechanism of Ni-Mo-C alloy were investigated by cyclic voltammetry curve,cathodic polarization curve,rotating disk electrode,electrochemical impedance spectroscopy and chronoamperometry techniques.The results show that the nucleation behavior occurs during the electrodeposition process of Ni-Mo-C alloy.The electrode reaction is an irreversible process.With the electrode potential increasing,the electrode reaction rate increases.The nucleation mechanism of alloy changes from continuous nucleation to transient nucleation,and the influence of mass transfer on alloy deposition becomes more apparent.