A microscopic study of the effects of particle size and composition of atmospheric aerosols on the corrosion of mild steel

Ngai T. Lau*, Chak K. Chan, Lap I. Chan, Ming Fang

*Corresponding author for this work

Research output: Contribution to journalJournal Articlepeer-review

19 Citations (Scopus)

Abstract

A novel approach to measure the corrosion effects of aerosols as a function of their aerodynamic size and chemical composition was used to study the effects of atmospheric aerosols on mild steel at a rural coastal site. The technique uses collocated micro-orifice uniform deposition impactor samplers to deposit ambient atmospheric particles on exposure steel coupons and collect aerosol samples for ionic analyses. Rusts were found on the coupons with aerosols but none on the blank coupons even the blanks were incubated at the same conditions. FTIR analysis shows that the composition of rusts changes gradually with the aerosol particle size.

Original languageEnglish
Pages (from-to)2927-2933
Number of pages7
JournalCorrosion Science
Volume50
Issue number10
DOIs
Publication statusPublished - Oct 2008

Keywords

  • A. Steel
  • B. IR spectroscopy
  • B. Weight loss
  • C. Atmospheric corrosion

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