TC4钛合金在O2 + CO2 气氛的高温高压模拟水沉积液中表面形成的钝化膜研究

张雅妮, 王思敏, 樊冰

Corrosion and Passivation Behavior of TC4 Ti-alloy in a Simulated Downhole Liquid in High-temperature and High-pressed O2 + CO2 Environment

ZHANG Yani, WANG Simin, FAN Bing

表4 不同环境下TC4循环极化正扫段曲线拟合结果

Table 4 Fitting results of positive sweep segments of cyclic polarization curves for TC4 Ti-alloy in different environments

Environment Ecorr / mV I0 / A‧cm-2 Ba / mV Bc / mV O2 -390 2.414 × 10-6 479.17 157.59 O2 + CO2 -568 3.022 × 10-6 1017.4 158.1 CO2 -649 3.386 × 10-6 290.72 192.84