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
表1 7075铝合金在不同溶液中的电化学阻抗拟合参数
Table 1 Electrochemical impedance fitting parameters of 7075 Al-alloy in different solutions
Inhibitor

Rs

Ω·cm2

Y0(Qdl)

Ω-1·cm-2·s n

n

Rct

Ω·cm2

Y0(Qf)

Ω-1·cm-2·s n

n

Rf

Ω·cm2

Rl

Ω·cm2

L
Blank6.9764×10-40.772.29---2.470.21
NaNO36.951.21×10-40.89188.9---123.8358
TU8.951.0×10-40.9676.22--43.5822.23
NaNO3 +TU8.977.51×10-50.93438.161.5*10-30.9729380.3925.88