Simultaneous copper runoff and copper surface analysis has been performed during a field exposure in a French industrial area. Corrosion layer composition was studied with fourier transform infrared reflection–absorption spectroscopy, x-ray diffraction and scanning electron microscopy with energy-dispensive scattering analysis, revealing cuprite, basic copper sulphates (brochantite and posjnakite) and copper sulphate pentahydrate (CuSO4·5H2O) as the main corrosion products after 3 months of exposure. In order to determine the soluble corrosion compounds carried with rain, the water streaming over a copper coupon was collected and analysed by means of ionic chromatography and potentiometric stripping analysis. Significant sulphate and copper concentrations were detected in water and interpreted as resulting from the dissolution of copper sulphate compounds.
No takes yet. Share an insight, caveat, or question.
Jouen et al. (2000) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: