Er对海工5052铝合金腐蚀行为的影响

张欣, 林木烟, 杨光恒, 王泽华, 邵佳, 周泽华

Effect of Er on Corrosion Behavior of Marine Engineering 5052 Al-alloy

ZHANG Xin, LIN Muyan, YANG Guangheng, WANG Zehua, SHAO Jia, ZHOU Zehua

表5 不同Er加入量的5052铝合金阻抗谱等效电路拟合参数

Table 5 Parameters of the equivalent elements in equivalent circuit for 5052 Al-alloys with different Er addition

No. Rsol / Ω·cm2 Qp / Ω-1·cm-2·s-1 n1 Rt / Ω·cm2 Qdl (pit) / Ω-1·cm-2·s-1 n2 Rt (pit) / Ω·cm2 A1 7.341 9.931×10-6 0.9029 1.705×104 10.96×10-6 0.8940 2.330×104 A2 8.915 9.162×10-6 0.9062 1.883×104 8.36×10-6 0.9558 2.464×104 A3 11.01 13.36×10-6 0.9190 2.528×104 5.634×10-6 0.8805 5.408×104 A4 9.278 10.22×10-6 0.8923 2.134×104 9.64×10-6 0.9962 2.162×104 A5 9.091 9.347×10-6 0.8798 1.218×104 10.37×10-6 0.8318 2.236×104 A6 8.293 7.278×10-6 0.8684 1.105×104 12.07×10-6 0.8697 1.456×104