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6 AZ91D在25 ℃添加和不添加1 g/L NBA在3.5%NaCl溶液中EIS拟合参数

Table 6 Fitting parameters of AZ91D 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 35.09 7.653 × 10-6 0.9310 1.873 × 103 7.935 × 103 4.78 × 105 5.420 × 10-4 2.879 × 103 2.466 × 10-3 NBA 37.09 3.482 × 10-5 0.8314 6.561 × 102 2.166 × 102 59.38 3.225 × 10-2 1.697 × 102 2.416 × 10-3