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3 AZ31B和AZ91D在25 ℃的含有1 g/L NBA的3.5%NaCl溶液中的析氢测试结果

Table 3 Hydrogen evolution results of AZ31B and AZ91D soaked in 3.5%NaCl solution with and without 1 g/L NBA

Mg-alloy Solution Time / h PH / mm·a-1 ηHev / % AZ31B 3.5%NaCl 24 0.1705 - 48 0.1474 - 72 0.1950 - 3.5%NaCl + 1 g/L NBA 24 0.1625 4.7 48 0.1156 21.6 72 0.0945 51.5 AZ91D 3.5%NaCl 24 0.0050 - 48 0.0041 - 72 0.0033 - 3.5%NaCl + 1 g/L NBA 24 0.0194 -288.0 48 0.0122 -197.6 72 0.0094 -184.8