Characterisation of salt films on dissolving metal surfaces in artificial corrosion pits via in situ synchrotron X-ray diffraction

Trevor Rayment, Alison Davenport, AJ Dent, Jean-Philippe Tinnes, Richard Wiltshire, C Martin, G Clark, P Quinn, JFW Mosselmans

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

The salt films formed on metal surfaces dissolving inside artificial corrosion pits formed in 1 M HCl have been probed with synchrotron X-ray diffraction. NiCl2 center dot 6H(2)O is the main phase in the salt film on nickel, whereas salt films on both iron and 316 L stainless steel are predominantly FeCl2 center dot 4H(2)O. However, the salt film on iron has a very fine homogeneous crystallite size whereas that on stainless steel is much coarser. The potential-dependence of the film formed on iron has been determined. (c) 2008 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)855-858
Number of pages4
JournalElectrochemistry Communications
Volume10
Issue number6
DOIs
Publication statusPublished - 1 Jan 2008

Keywords

  • corrosion pitting
  • salt film
  • synchrotron
  • X-ray diffraction

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