INFLUENCE OF ENVIRONMENTAL FACTORS IN THE ATMOSPHERIC CORROSION OF COPPER IN THE PRESENCE OF PROPIONIC ACID

Exposure time, pollutant concentration, and relative humidity (RH) are important environmental variables for the atmospheric corrosion of copper in the presence of propionic acid vapors. This paper shows the most outstanding results into the effect of these variables. This study was carried out by m...

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Autores principales:	ECHAVARRÍA,A, ECHEVERRÍA,F, GIL,H, ARROYAVE,C
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2009
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072009000300003
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spelling	oai:scielo:S0717-970720090003000032010-03-17INFLUENCE OF ENVIRONMENTAL FACTORS IN THE ATMOSPHERIC CORROSION OF COPPER IN THE PRESENCE OF PROPIONIC ACIDECHAVARRÍA,AECHEVERRÍA,FGIL,HARROYAVE,CExposure time, pollutant concentration, and relative humidity (RH) are important environmental variables for the atmospheric corrosion of copper in the presence of propionic acid vapors. This paper shows the most outstanding results into the effect of these variables. This study was carried out by mean of exposures at dynamic conditions in 260, 380, and 680 ppbv propionic acid, with relative humidities of 70% and 90%. The effect of the propionic acid was also evaluated in static conditions with 4, 40, and 120 ppmv propionic acid with relative humidities of 40%, 80%, and 100% RH. Allthe samples were evaluated by triplícate within 21 days of exposure. The corrosion rate was usedto quantify the degradation of copper by mean of weight loss and coulometric reduction technique. Coulometric reduction indicates that the charge needed to reduce the oxides increases as exposure time, relative humidity and pollutant concentration increases. On the other hand, the corrosion rate determined gravimetrically, confirms that at a higher relative humidity and higher propionic acid concentration the copper deterioration is also higher.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.54 n.3 20092009-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072009000300003en10.4067/S0717-97072009000300003
institution	Scielo Chile
collection	Scielo Chile
language	English
description	Exposure time, pollutant concentration, and relative humidity (RH) are important environmental variables for the atmospheric corrosion of copper in the presence of propionic acid vapors. This paper shows the most outstanding results into the effect of these variables. This study was carried out by mean of exposures at dynamic conditions in 260, 380, and 680 ppbv propionic acid, with relative humidities of 70% and 90%. The effect of the propionic acid was also evaluated in static conditions with 4, 40, and 120 ppmv propionic acid with relative humidities of 40%, 80%, and 100% RH. Allthe samples were evaluated by triplícate within 21 days of exposure. The corrosion rate was usedto quantify the degradation of copper by mean of weight loss and coulometric reduction technique. Coulometric reduction indicates that the charge needed to reduce the oxides increases as exposure time, relative humidity and pollutant concentration increases. On the other hand, the corrosion rate determined gravimetrically, confirms that at a higher relative humidity and higher propionic acid concentration the copper deterioration is also higher.
author	ECHAVARRÍA,A ECHEVERRÍA,F GIL,H ARROYAVE,C
spellingShingle	ECHAVARRÍA,A ECHEVERRÍA,F GIL,H ARROYAVE,C INFLUENCE OF ENVIRONMENTAL FACTORS IN THE ATMOSPHERIC CORROSION OF COPPER IN THE PRESENCE OF PROPIONIC ACID
author_facet	ECHAVARRÍA,A ECHEVERRÍA,F GIL,H ARROYAVE,C
author_sort	ECHAVARRÍA,A
title	INFLUENCE OF ENVIRONMENTAL FACTORS IN THE ATMOSPHERIC CORROSION OF COPPER IN THE PRESENCE OF PROPIONIC ACID
title_short	INFLUENCE OF ENVIRONMENTAL FACTORS IN THE ATMOSPHERIC CORROSION OF COPPER IN THE PRESENCE OF PROPIONIC ACID
title_full	INFLUENCE OF ENVIRONMENTAL FACTORS IN THE ATMOSPHERIC CORROSION OF COPPER IN THE PRESENCE OF PROPIONIC ACID
title_fullStr	INFLUENCE OF ENVIRONMENTAL FACTORS IN THE ATMOSPHERIC CORROSION OF COPPER IN THE PRESENCE OF PROPIONIC ACID
title_full_unstemmed	INFLUENCE OF ENVIRONMENTAL FACTORS IN THE ATMOSPHERIC CORROSION OF COPPER IN THE PRESENCE OF PROPIONIC ACID
title_sort	influence of environmental factors in the atmospheric corrosion of copper in the presence of propionic acid
publisher	Sociedad Chilena de Química
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072009000300003
work_keys_str_mv	AT echavarriaa influenceofenvironmentalfactorsintheatmosphericcorrosionofcopperinthepresenceofpropionicacid AT echeverriaf influenceofenvironmentalfactorsintheatmosphericcorrosionofcopperinthepresenceofpropionicacid AT gilh influenceofenvironmentalfactorsintheatmosphericcorrosionofcopperinthepresenceofpropionicacid AT arroyavec influenceofenvironmentalfactorsintheatmosphericcorrosionofcopperinthepresenceofpropionicacid
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INFLUENCE OF ENVIRONMENTAL FACTORS IN THE ATMOSPHERIC CORROSION OF COPPER IN THE PRESENCE OF PROPIONIC ACID

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