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Early stages of copper corrosion behaviour in a Tunisian soil
Author(s) -
Souissi N.,
Triki E.
Publication year - 2010
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.200905383
Subject(s) - copper , corrosion , cyclic voltammetry , materials science , electrochemistry , polarization (electrochemistry) , kinetic energy , optical microscope , erosion corrosion of copper water tubes , metallurgy , dielectric spectroscopy , analytical chemistry (journal) , activation energy , scanning electron microscope , chemistry , composite material , electrode , environmental chemistry , quantum mechanics , physics
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.