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handle: 10261/4474
[ES] En la actualidad hay un gran interés por estudiar la corrosión ocasionada por contaminantes existentes en atmósferas interiores, fundamentalmente ácidos orgánicos. De entre ellos, el más importante es el ácido acético. En este trabajo se ha estudiado la corrosión del cobre por exposición a vapores de ácido acético, a tres concentraciones (10, 100 y 300 ppm), a humedades relativas (HR) del 40 y 80 % y con un tiempo de exposición de 21 días. La velocidad de corrosión se ha cuantificado por métodos gravimétricos, obteniendo velocidades de corrosión de entre 0,08 y 0,17 mg/(dm2·día) (mdd) para el 40 % HR, y entre 0,11 y 6,53 mdd para el 80 % HR. Los productos de corrosión se han caracterizado por espectroscopía fotoelectrónica de rayos X (XPS) combinada con decapado por iones Argón. Los principales productos de corrosión encontrados fueron cuprita [Cu2O], hidróxido de cobre [Cu(OH)2] y acetato de cobre [Cu(CH3COO)2].
[EN] Recently, there has been an increasing interest in the study of corrosion originated by pollutants in indoor environments, mainly organic acids. Amongst them, the most important is acetic acid. Copper corrosion originated by acetic acid vapours has been studied in this work, at three vapour concentrations (10, 100, and 300 ppm), at 40% and 80% relative humidity (RH) for a period of 21 days. Corrosion rate, obtained using gravimetric methods, was in the range from 0.08 to 0.17 mg/(dm2·day) (mdd) for 40% RH and from 0.11 to 6.53 mdd for 80% RH. Corrosion products have been studied using X-ray photoelectron spectroscopy (XPS), and argon-ion sputtering techniques. The main compounds found were cuprite [Cu2O], copper hydroxide [Cu(OH)2] and copper acetate [Cu(CH3COO)2].
Peer reviewed
Corrosion en interiores, Clay industries. Ceramics. Glass, Acetic acid, ácido acético, Ácido acético, TP785-869, acetic acid, Cobre, copper, cobre, Organic acids, organic acids, ácidos orgánicos, Indoor corrosion, Corrosión en interiores, Ácidos orgánicos, Copper
Corrosion en interiores, Clay industries. Ceramics. Glass, Acetic acid, ácido acético, Ácido acético, TP785-869, acetic acid, Cobre, copper, cobre, Organic acids, organic acids, ácidos orgánicos, Indoor corrosion, Corrosión en interiores, Ácidos orgánicos, Copper
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