载荷对5383铝合金焊接接头电化学腐蚀行为的影响

翟熙伟, 刘士一, 王丽, 贾瑞灵, 张慧霞

Effect of Applied Load on Corrosion Behavior of 5383 Al-alloy Welded Joints

ZHAI Xiwei, LIU Shiyi, WANG Li, JIA Ruiling, ZHANG Huixia

表2 不同载荷下5383铝合金焊接接头电化学阻抗拟合结果

Table 2 Fitting results of EIS of 5383 aluminum alloy welded joint under different applied loads

Applied load / MPa Rs / Ω·cm2 Qf / F·cm-2 nf Rf / Ω·cm2 Qdl / F·cm-2 nct Rct / Ω·cm2 0 9.688 2.024 × 10-6 0.9097 6.742 × 104 2.451 × 10-5 1 1.429 × 105 50%Rel 12.85 9.872 × 10-6 0.8739 4.379 × 104 5.689 × 10-5 1 4.851 × 104 80%Rel 10.04 1.673 × 10-5 0.8510 2.183 × 104 1.372 × 10-4 1 2.028 × 104 100%Rel 10.26 3.438 × 10-5 0.7738 1.225 × 104 4.174 × 10-4 1 4.511 × 103