Effects of different metal corrosion inhibitors on hydrogen suppression and film formation with Mg-Zn alloy dust in NaCl solutions

摘要

To improve the safety of wet dust removal systems for processing magnesium-based alloys, a new method is proposed for preventing hydrogen generation. In this paper, hydrogen generation by Mg-Zn alloy dust was inhibited with six common metal corrosion inhibitors. The results showed that sodium dodecylbenzene sulfonate was the best hydrogen inhibitor, while CeCl3 enhanced hydrogen precipitation. The film-forming stability of sodium dodecylbenzene sulfonate was tested with different contents, temperatures, Cl- concentrations and perturbation rates. The results showed that this inhibitor formed stable protective films on the surfaces of Mg-Zn alloy particles, and adsorption followed the Langmuir adsorption model. (c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.