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Título: | Morphological study of 16-year patinas formed on copper in a wide range of atmospheric exposures |
Autor: | Fuente, Daniel de la CSIC ORCID; Simancas Peco, Joaquín CSIC; Morcillo, Manuel CSIC ORCID | Fecha de publicación: | 2008 | Editor: | Elsevier | Citación: | Corrosion Science 50: 268-285 (2008) | Resumen: | Much information is available on the atmospheric corrosion of copper and patina formation mechanisms in the short, mid and even long term. However, studies of the structure and morphology of patina layers are less abundant and mostly deal with patinas formed in the atmosphere over a small number of years. The present study concentrates on the structure and morphology of corrosion product films formed on copper after long-term atmospheric exposure (13-16 years) in five Spanish atmospheres of different types: rural, urban, industrial and marine (mild and severe). Characterisation has been performed by X-ray diffraction (XRD) and scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS). Long-term copper corrosion is higher in industrial and marine atmospheres and lower in rural and urban atmospheres. In all cases a decrease in the corrosion rate with exposure time is observed. The formation of antlerite [Cu3SO4(OH)4] is seen in more acidic conditions and in specimen areas subject to a high time of wetness. The presence of nantokite (CuCl), which is not generally mentioned in field studies, has been detected under the cuprite layer very close to the base copper. © 2007 Elsevier Ltd. All rights reserved. | URI: | http://hdl.handle.net/10261/75600 | DOI: | 10.1016/j.corsci.2007.05.030 | Identificadores: | doi: 10.1016/j.corsci.2007.05.030 issn: 0010-938X |
Aparece en las colecciones: | (CENIM) Artículos |
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