TC4表面沉积Nb涂层在模拟体液环境下的电化学性能研究

史昆玉, 吴伟进, 张毅, 万毅, 于传浩

Electrochemical Properties of Nb Coating on TC4 Substrate in Simulated Body Solution

SHI Kunyu, WU Weijin, ZHANG Yi, WAN Yi, YU Chuanhao

表3 Nb涂层与TC4基体的钝化膜在37 ℃ Ringer's溶液中的电容测量和计算结果

Table 3 Capacitances of the passive films formed on the Nb coating and Ti-6Al-4V substrate in Ringer's solution at 37 ℃

Sample Nb coating Ti-6Al-4V 0.4 V Efb / V -1.540 -1.122 Nd / 1016 cm-3 1.561 405.933 0.6 V Efb / V -1.462 -1.130 Nd / 1016 cm-3 1.337 311.725 0.8 V Efb / V -1.406 -1.116 Nd / 1016 cm-3 1.205 267.045 1.0 V Efb / V -1.431 -1.068 Nd / 1016 cm-3 1.092 256.741 ω2 / cm-3 8.377×1015 2.440×1018 Iss / A·cm-2 8.32×10-8 6.03×10-7 εL / V ·cm-1 1.707×108 2.551×106 D0 / cm2·s-1 2.430×10-15 4.045×10-15