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2 EIS图谱拟合结果

Table 2 Fitting results for EIS spectra of 5A06 Al-alloy

Depth / m Rs / Ω·cm2 Rf / Ω·cm2 Qf / S·sec n ·cm-2 nf Rct / Ω·cm2 Qdl / S·sec n ·cm-2 nct 500 27.28 8.31×104 3.33×10-5 0.73 5.82×105 2.29×10-6 0.82 800 22.64 1.30×104 2.60×10-5 0.68 4.31×107 1.90×10-5 0.92 1200 29.95 2.84×104 2.34×10-5 0.71 6.02×107 2.50×10-5 1.00 2000 29.29 1.51×104 2.90×10-5 0.68 1.91×108 3.50×10-5 0.98