Insight into the product film formed on Ni-advanced weathering steel in a tropical marine atmosphere

  • Wei Wu
  • , Xuequn Cheng*
  • , Huaxing Hou
  • , Bo Liu
  • , Xiaogang Li
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The product film formed on Ni-advanced weathering steel in a tropical marine environment was investigated in detail through outdoor exposure by using diverse surface analysis techniques combined with electrochemical impedance spectroscopy and scanning kelvin probe measurements. The results showed that the product film was mainly composed of nanophasic goethite in the inner layer and maghemite, akaganeite, and hematite in the outer layer. Moreover, the resistance to atmospheric corrosion gradually increased from the outermost product film to the innermost film. Ni was significantly enriched in the inner layer in the form of the spinel phase NiFe 2 O 4 , which transformed lepidocrocite to fine-grained goethite, withstood the invasion of chloridion, and improved the corrosion potential of the product film in a tropical marine atmosphere.

Original languageEnglish
Pages (from-to)80-89
Number of pages10
JournalApplied Surface Science
Volume436
DOIs
StatePublished - 1 Apr 2018
Externally publishedYes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 14 - Life Below Water
    SDG 14 Life Below Water

Keywords

  • Corrosion product film
  • Ni-advanced weathering steel
  • SKP
  • Tropical marine atmosphere
  • XPS

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