Corrosion Behavior of Copper Exposed in Marine Tropical Atmosphere in Rapa Nui (Easter Island) Chile 20 Years after MICAT

Primer Autor
Vera, Rosa
Co-autores
Valverde, Barbara
Olave, Elizabeth
Diaz-Gomez, Andres
Sanchez-Gonzalez, Rodrigo
Munoz, Lisa
Martinez, Carola
Rojas, Paula
Título
Corrosion Behavior of Copper Exposed in Marine Tropical Atmosphere in Rapa Nui (Easter Island) Chile 20 Years after MICAT
Editorial
MDPI
Revista
METALS
Lenguaje
en
Resumen
Atmospheric corrosion of copper, exposed on a tropical island in the South-Central Pacific Ocean, was reported and compared with those of a very similar study at the same site conducted 20 years earlier. The new measurements-taken over three years of exposure, from 2010 to 2013-quantified corrosion by mass loss, characterized corrosion products by X-ray diffraction (DRX) and Raman techniques, observed the attack morphology by Scanning Electron Microscope (SEM), and evaluated the patina resistance using electrochemical techniques. The results showed a copper corrosivity category of C4, and the main copper patina compound, cuprite, was porous, nonhomogeneous, and thin. Electrochemical measurements showed cuprite layer growth as a function of the exposure time, and the morphology did not favor corrosion protection. Finally, when comparing the results to those of a study 22 years previous, the copper corrosion rates increased only slightly, even with increased contaminants associated with growing local populations and continuous tourism on the island.
Fecha Publicación
2022
Tipo de Recurso
artículo original
doi
10.3390/met12122082
Formato Recurso
PDF
Palabras Claves
atmospheric corrosion
marine environments
Easter Island (Rapa Nui)
corrosion maps
corrosion of copper
climate change
Ubicación del archivo
http://dx.doi.org/10.3390/met12122082
Categoría OCDE
Ciencia de Materiales
Metalurgia e Ingeniería Metalúrgica
Materias
corrosión atmosférica
ambientes marinos
Isla de Pascua (Rapa Nui)
mapas de corrosión
corrosión del cobre
cambio climático
Identificador del recurso (Mandatado-único)
artículo original
Versión del recurso (Recomendado-único)
versión publicada
License
CC BY 4.0
Condición de la licencia (Recomendado-repetible)
CC BY 4.0
Derechos de acceso
acceso abierto
Access Rights
acceso abierto
Id de Web of Science
WOS:000904343700001
Tipo de ruta
verde# dorado
Categoría WOS
Ciencia de Materiales
Metalurgia e Ingeniería Metalúrgica
Referencia del Financiador (Mandatado si es aplicable-repetible)
CORFO 09CN14-5879
ANID FONDEUIP EQM 160091
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Colección ANID
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