Mg处理X70级抗酸性海底管线钢 (X70MOS) 成分设计及耐蚀性能研究

郎丰军, 黄峰, 徐进桥, 李利巍, 岳江波, 刘静

Composition Design and Corrosion Resistance of Mg Microallyed X70 Grade Acid Resistant Submarine Pipeline Steel (X70MOS)

LANG Fengjun, HUANG Feng, XU Jinqiao, LI Liwei, YUE Jiangbo, LIU Jing

表3 极化曲线Tafel活性区拟合参数及计算得腐蚀速率

Table 3 Polarization curve Tafel active zone fitting parameters and calculated corrosion rate

Sample NACE A 3.5%NaCl ESCE / mV I / mA·cm-2 V / mm·a-1 ESCE / mV I / mA·cm-2 V / mm·a-1 1# -584 0.066 0.772 -678 0.008 0.094 2# -585 0.077 0.901 -688 0.017 0.199 3# -632 0.247 2.890 -692 0.041 0.480