The measurement of shape change during early stages of corrosion pit growth

David B. Reiser, Richard C. Alkire

Research output: Contribution to journalArticlepeer-review

Abstract

S.E.M. stereo photogrammetry methods were used to measure the shape of corrosion pits grown on pure iron in 1 N H2SO4 containing 0.003 N NaCl at +0.65 V (Ag/AgCl). The method involved analysis of matched S.E.M. stereo pairs with use of the 'floating dot' technique. The method was found to be accurate and precise to within 3%. Analysis of 76 pits in the size range 7-200 μm diameter indicated that corrosion pits in the model system studied were essentially hemispherical up to 50 μm diameter, and were more shallow above this size.

Original languageEnglish (US)
Pages (from-to)579-585,587-589
JournalCorrosion Science
Volume24
Issue number7
DOIs
StatePublished - 1984

ASJC Scopus subject areas

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

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