3.5%NaCl溶液中硝基巴比妥酸对AZ31B与AZ91D镁合金腐蚀的缓蚀作用及机理研究

翟亚如, 熊金平, 赵景茂

Corrosion Inhibition Performance of Nitrobarbituric Acid on Mg-alloys AZ31B and AZ91D in 3.5%NaCl Solution

ZHAI Yaru, XIONG Jinping, ZHAO Jingmao

表5 AZ31B在25 ℃添加和不添加1 g/L NBA的3.5%NaCl溶液中EIS拟合参数

Table 5 Fitting parameters of AZ31B in 3.5%NaCl solution with or without 1 g/L NBA at 25 ℃

Corrosion inhibitor RsΩ·cm2 QfΩ-1·cm-2·s n n RfΩ·cm2 RLΩ·cm2 LH·cm2 CdlΩ-1·cm-2·s n RctΩ·cm2 χ2 Blank 55.78 - - - 2.172 × 102 3.114 × 102 2.679 × 10-5 1.166 × 102 1.210 × 10-3 NBA 82.90 2.725 × 10-5 0.7901 1.582 × 103 - - 6.743 × 10-6 2.686 × 104 3.129 × 10-3