EIS研究7050铝合金在NaCl溶液空蚀作用下的界面状态与腐蚀机制

夏大海, 潘成成, 郭玉杰, 胡文彬, TRIBOLLET Bernard

Electrochemical Impedance Spectroscopy Analysis on Interface State and Corrosion Mechanism of 7050 Al-alloy Subjected to Cavitation Erosion in NaCl Solution

XIA Da-Hai, PAN Chengcheng, GUO Yujie, HU Wenbin, TRIBOLLET Bernard

图2 7050铝合金在3.5%NaCl溶液中空蚀5 min后的空蚀形貌

Fig.2 Cavitation erosion morphologies at center and outer ring of 7050 Al-alloy specimens for gap width of 1 mm, after 5 min cavitation erosion (a1, b1) morphologies of two typical regions, (a2, a3) local magnified images of the region 1and region 2 in Fig2a1, (b2, b3) local magnified images of the region 3 and region 4 marked in Fig.2b1