EXAFS study of atmospheric corrosion products on zinc at the initial stage

  • S. C. Chung
  • , A. S. Lin
  • , J. R. Chang
  • , H. C. Shih*
  • *Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

50 Scopus citations

Abstract

The corrosion resistance and structural information of zinc atmospheric corrosion products at the initial stage were investigated by using ex-situ electrochemical impedance spectroscopy (EIS) in methanol and extended X-ray absorption fine structure spectroscopy (EXAFS). EIS in methanol performs excellent resolution to the corrosion resistance of the surface layer from various atmospheric exposures. The corrosion resistance of zinc exposed to air of 100% RH for 48 h was found three times larger than that of zinc exposed to an air of 95% RH. The EXAFS data reveal that hydrozincite and amorphous zinc hydroxide are the corrosion products of zinc exposed to atmospheres of 100% RH and 95% RH, respectively. (C) 2000 Elsevier Science Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)1599-1610
Number of pages12
JournalCorrosion Science
Volume42
Issue number9
DOIs
StatePublished - 01 09 2000
Externally publishedYes

Keywords

  • Atmospheric corrosion
  • EIS
  • EXAFS
  • Zinc

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