Corrosion of copper in 1 M NaCl under strictly anoxic conditions

Martin Bojinov, Timo Laitinen, Kari Mäkelä, Margit Snellman, Lars Werme

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

7 Citations (Scopus)

Abstract

The corrosion of copper in 1 M NaCl has been investigated at room temperature and at 80°C by an on-line resistance probe, solution analysis of dissolved copper and weight loss measurements. At room temperature, corrosion of the copper as indicated by an increase of the probe resistance has been detected during the first 60–80 h of exposure. After the corrosion potential has reached the immunity region of Cu, a decrease in the resistance of the sensor is observed, probably due to redeposition of Cu from the solution. It can be concluded that the corrosion of copper at room temperature virtually stops after 60–80 h due to the anoxic conditions established in the experiments. The similarity in the trends of the corrosion and redox potential during exposure seems to indicate that Cu(II) contained in the native oxide on Cu and/or formed by homogeneous oxidation of Cu(I) during the initial oxic period of exposure acts as a redox-agent determining the chemical conditions in the closed system.
Original languageEnglish
Title of host publicationScientific Basis for Nuclear Waste Management XXVII
EditorsVirginia M. Oversby, Lars O. Werme
Place of PublicationWarrendale
PublisherMaterials Research Society
Pages630-635
ISBN (Print)978-1-61738-390-8
DOIs
Publication statusPublished - 2004
MoE publication typeA4 Article in a conference publication
EventScientific Basis for Nuclear Waste Management XXVII - Kalmar, Sweden
Duration: 15 Jun 200319 Jun 2003

Publication series

SeriesMRS Online Proceedings
Volume807
ISSN0272-9172

Conference

ConferenceScientific Basis for Nuclear Waste Management XXVII
Country/TerritorySweden
CityKalmar
Period15/06/0319/06/03

Keywords

  • copper
  • chlorides
  • corrosion
  • wire resistance probe sensor

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