Effect of anodizing on galvanic corrosion resistance of Al coupled to Fe or type 430 stainless steel in diluted synthetic seawater

Takumi Kosaba, Izumi Muto, Yu Sugawara

Research output: Contribution to journalArticlepeer-review

Abstract

In 100-times diluted synthetic seawater at 298 K (pH 8.2), the effect of anodizing on the galvanic corrosion resistance of Al coupled to Fe or Type 430 stainless steel was investigated by measuring the galvanic current densities and electrode potentials of the Al. The optimal anodizing conditions for the corrosion prevention of Al/Fe and Al/Type 430 were determined. The results of this study clearly indicate that the increase in the initiation potential of localized corrosion due to anodizing in H2SO4 effectively prevents the atmospheric corrosion of Al coupled to steels.

Original languageEnglish
Article number109145
JournalCorrosion Science
Volume179
DOIs
Publication statusPublished - 2021 Feb

Keywords

  • Anodizing
  • Galvanic corrosion
  • Pure aluminum
  • Pure iron
  • Stainless steel

ASJC Scopus subject areas

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

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