Effects of different metal corrosion inhibitors on hydrogen suppression and film formation with Mg–Zn alloy dust in NaCl solutions |
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Affiliation: | 1. College of Resources and Civil Engineering, Northeastern University, Shenyang 110159, PR China;2. School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, PR China |
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Abstract: | 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. |
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Keywords: | Mg–Zn alloy dust Metal corrosion inhibitors Hydrogen inhibition Wet dust collection system Hydrogen fires and explosions |
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