Article Dans Une Revue Journal of Magnesium and Alloys Année : 2023

Sodium dodecyl sulfate (SDS) as an effective corrosion inhibitor for Mg-8Li-3Al alloy in aqueous NaCl: A combined experimental and theoretical investigation

Honggun Song
  • Fonction : Auteur
Zhidong Xu
  • Fonction : Auteur
Zheng Yin
  • Fonction : Auteur
Hong Yan
  • Fonction : Auteur
Luo Chao
  • Fonction : Auteur
Zhi Hu
  • Fonction : Auteur correspondant
  • PersonId : 1089940

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Résumé

The corrosion inhibition behavior of Mg-8Li-3Al alloy in NaCl solution with sodium dodecyl sulfate (SDS) was investigated by hydrogen analysis, scanning electron microscopy (SEM), electrochemical test, scanning Kelvin probe force microscopy (SKPFM) and computational methods. Results showed that the corrosion resistance of Mg-8Li-3Al alloy in NaCl solution was effectively improved with SDS. The SEM and SKPFM results confirmed a dense, 200 nm-thick SDS-adsorbed layer had formed on the alloy surface. The separation energy ∆Egap and adsorption energy Eads of SDS on the Mg surface were calculated by density functional theory and molecular dynamics simulations, respectively. And the corrosion inhibition mechanism was hypothesized and described.

Dates et versions

hal-04122288 , version 1 (08-06-2023)

Identifiants

Citer

Honggun Song, Zhidong Xu, Lahouari Benabou, Zheng Yin, Hongyu Guan, et al.. Sodium dodecyl sulfate (SDS) as an effective corrosion inhibitor for Mg-8Li-3Al alloy in aqueous NaCl: A combined experimental and theoretical investigation. Journal of Magnesium and Alloys, 2023, 11 (1), pp.287-300. ⟨10.1016/j.jma.2021.07.006⟩. ⟨hal-04122288⟩
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