Multi-phase-field modeling of localized corrosion involving galvanic pitting and mechano-electrochemical coupling

Chen Lin, Haihui Ruan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)

Abstract

A new multi-phase-field (multi-PF) model is proposed to study a complex localized corrosion process that involves mechano-electrochemical coupling, anodic dissolution, insoluble depositions (IDs) formation, and resulted Galvanic-pitting corrosion. Based on a quantitative investigation into the effects of Cl concentration, pH value, mechanical loading, and electric field, we reveal the autocatalytic process of pitting assisted by increasingly aggressive chemical environment and concentrated stress and study how the external electric field can arrest assisted corrosion and prolong service lifetime. The proposed model can be a useful tool for the lifetime management of metallic components serving in ocean or other more aggressive environments.

Original languageEnglish
Article number108900
JournalCorrosion Science
Volume177
DOIs
Publication statusPublished - Dec 2020

Keywords

  • Galvanic-pitting
  • Localized corrosion
  • Mechano-electrochemical coupling
  • Multi-Phase-Field Model

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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