酸性氯化钠溶液中硝酸钠和硫脲对7075铝合金缝隙腐蚀的协同缓蚀作用

吕正平, 李缘, 刘晓航, 崔中雨, 崔洪芝, 王昕, 逄昆, 李燚周

Synergistic Inhibition Effect of Thiourea and Sodium Nitrate on Crevice Corrosion of 7075 Al-alloy in Acidic Sodium Chloride Solution

LYU Zhengping, LI Yuan, LIU Xiaohang, CUI Zhongyu, CUI Hongzhi, WANG Xin, PANG Kun, LI Yizhou

图5 7075铝合金在不同溶液中浸泡24 h的缝隙内外的电位变化曲线

Fig.5 Curves of potential change inside and outside the crevice of 7075 Al-alloy immersed in blank (a), 1% NaNO3 (b), 0.02% TU (c) and 1% NaNO3+0.02% TU (d) solutions for 24 h