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Early stages of copper corrosion behaviour in a Tunisian soil

✍ Scribed by N. Souissi; E. Triki

Publisher: John Wiley and Sons
Year: 2009
Tongue: German
Weight: 377 KB
Volume: 61
Category: Article
ISSN: 0947-5117
DOI: 10.1002/maco.200905383

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✦ Synopsis

Abstract

The early stages of copper corrosion in a Tunisian soil were studied using mass loss, surface analysis (optical microscopy, visible spectroscopy, IRTF and atomic force microscopy) and electrochemical characterizations (polarization curves and cyclic voltammetry). The corrosion rate dependence with immersion time was Δm = at^b^. Two behaviours for the material surface were evidenced when varying the soil concentration and temperature. Then, the apparent kinetic constant, the soil reaction order and the apparent activation energy were calculated. Analytical and electrochemical characterizations showed that a rough patina layer was build up as a result of the interaction between soil and copper.

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