Molecular Dynamics Simulation on the Corrosion Inhibition Mechanism of Octadecylamine Inhibitor Film

Authors

  • Chao Li
  • Junlin Huang
  • Keyi Zhou
  • Qinglan Xu

DOI:

https://doi.org/10.56028/aetr.1.1.75

Keywords:

Octadecylamine, molecular dynamics, diffusion.

Abstract

Octadecylamine (ODA), a well-known film-forming amine, recently finds increasing application in nuclear pressurized water reactors to protect carbon steel components in the secondary circuit against corrosion. To clarify the inhibition mechanism, molecular dynamics simulations were employed to study the diffusion characteristics of three commonly encountered species, H2O, O2, and Cl-, in the formed inhibitor film. The simulation results revealed that the formed film mitigates corrosion by effectively impeding the diffusion of corrosion species in the film. For various species, the film exhibits markedly different inhibition abilities.

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Published

2022-05-13