A benzotriazole Mannich base, N-(N-diethylethanamine)-methyl benzotriazole (DEAMB), was synthesized and analyzed by NMR and MS. The corrosion inhibition of DEAMB and the inhibition mechanism in 2M and 3M HCl solution were investigated and discussed. The research results showed that DEAMB can inhibit the acidic corrosion with moderate to high inhibition efficiency in kinds of conditions, and the inhibition mechanism should be mainly contributed to the molecules adsorption on the steel surface, which is further confirmed by potentiodynamic polarization studies.

Ya Wu, Hongjiang Yu, Shijun Chen, Jiao Yan and Xuefan Gu, Yan Li and Gang Chen