深海环境5A06铝合金腐蚀行为与表面特性

段体岗, 李祯, 彭文山, 张彭辉, 丁康康, 郭为民, 侯健, 马力, 许立坤

Corrosion Characteristics of 5A06 Al-alloy Exposed in Natural Deep-sea Environment

DUAN Tigang, LI Zhen, PENG Wenshan, ZHANG Penghui, DING Kangkang, GUO Weimin, HOU Jian, MA Li, XU Likun

表1 5A06铝合金在暴露1 a后的Tafel分析结果

Table 1 Tafel analysis results of 5A06 Al-alloy after exposing at various sea depths for 1 a

Depth / m E0 / V I0 / A·cm-2 Epit / V Ip / A·cm-2 500 -0.907 4.71×10-8 -0.482 7.89×10-7 800 -0.762 9.93×10-8 -0.473 1.23×10-7 1200 -0.748 5.56×10-8 -0.478 3.45×10-7 2000 -0.640 2.36×10-8 -0.476 7.52×10-8