喷射电沉积Ni-P-BN(h)-Al2O3复合镀层的耐腐蚀性能研究

杨寅初,傅秀清,刘琳,马文科,沈莫奇

Electrochemical Corrosion of Ni-P-BN(h)-Al2O3 Composite Coating Deposited by Spray Electrodeposition

Yinchu YANG,Xiuqing FU,Lin LIU,Wenke MA,Moqi SHEN

表2 电化学阻抗谱各元件等效电路拟合值

Table 2 Values of the elements in the equivalent circuit for AC impedance spectroscopy of passive films formed on 3 specimens

Injection parameter RsΩ·cm2 CPE-TF·SP·cm-2 CPE-P RpΩ·cm2 22 V, 1.6 mm 6.541 8.115×10-5 0.81628 3872 25 V, 1.6 mm 4.413 1.933×10-4 0.74725 5500 28 V, 1.6 mm 6.645 1.249×10-4 0.83330 5061 25 V, 1.8 mm 5.189 2.816×10-4 0.66337 5996 25 V, 2.0 mm 9.431 1.175×10-4 0.78429 6187