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Galvanic Corrosion of the Base AISI 316l/Micro-Plasma Arc Welded AISI 316l in Polluted Phosphoric Acid Media at Different Temperatures

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Galvanic Corrosion of the Base AISI 316l/Micro-Plasma Arc Welded AISI 316l in Polluted Phosphoric Acid Media at Different Temperatures

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dc.contributor.author Sánchez Tovar, Rita es_ES
dc.contributor.author Montañés Sanjuan, María Teresa es_ES
dc.contributor.author Garcia-Anton, Jose es_ES
dc.contributor.author Guenbour, A. es_ES
dc.date.accessioned 2016-02-24T08:15:35Z
dc.date.available 2016-02-24T08:15:35Z
dc.date.issued 2011-08
dc.identifier.issn 1452-3981
dc.identifier.uri http://hdl.handle.net/10251/61144
dc.description.abstract [EN] In this work, the galvanic corrosion of the base AISI 316L stainless steel/micro-plasma arc welded AISI 316L stainless steel in phosphoric acid solutions polluted with sulphuric acid and chlorides was studied by means of the Zero-Resistance Ammeter technique. Experiments were performed at different temperatures (25, 40 and 60 degrees C) under flowing conditions (Reynolds number of 1456). Galvanic current density values are negative during the first hour of the test indicating that the welded alloy is corroding; then, they shift towards positive values indicating that the base stainless steel corrodes. Galvanic current density values reached stable values from the third hour of the tests performed at 25 and 40 degrees C, and during the last two hours of the test at 60 degrees C indicating passivation of the base alloy. Uniform corrosion processes occur for the AISI 316L alloy in polluted phosphoric acid solutions. Galvanic current densities increase with temperature according to Arrhenius plot. Impurities seem to increase galvanic corrosion and hinder passivation processes. es_ES
dc.description.sponsorship This work was supported by the Spanish MAEC (PCI Mediterraneo C/8196/07, C/018046/08, D/023608/09, D/030177/10). The authors also wish to express their gratitude to Dr. Asuncion Jaime for her translation assistance.
dc.language Inglés es_ES
dc.relation MAEC/C/8196/07 es_ES
dc.relation MAEC/C/018046/08
dc.relation MAEC/D/023608/09
dc.relation MAEC/D/030177/10
dc.relation.ispartof International Journal of Electrochemical Science es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Phosphoric acid es_ES
dc.subject AISI 316L stainless steel es_ES
dc.subject Galvanic corrosion es_ES
dc.subject Welding es_ES
dc.subject Zero-resistance ammeter es_ES
dc.subject.classification INGENIERIA QUIMICA es_ES
dc.title Galvanic Corrosion of the Base AISI 316l/Micro-Plasma Arc Welded AISI 316l in Polluted Phosphoric Acid Media at Different Temperatures es_ES
dc.type Artículo es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Química y Nuclear - Departament d'Enginyeria Química i Nuclear es_ES
dc.description.bibliographicCitation Sánchez Tovar, R.; Montañés Sanjuan, MT.; Garcia-Anton, J.; Guenbour, A. (2011). Galvanic Corrosion of the Base AISI 316l/Micro-Plasma Arc Welded AISI 316l in Polluted Phosphoric Acid Media at Different Temperatures. International Journal of Electrochemical Science. 6(8):3656-3670. http://hdl.handle.net/10251/61144 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://www.electrochemsci.org/papers/vol6/6083656.pdf es_ES
dc.description.upvformatpinicio 3656 es_ES
dc.description.upvformatpfin 3670 es_ES
dc.type.version info:eu repo/semantics/publishedVersion es_ES
dc.description.volume 6 es_ES
dc.description.issue 8 es_ES
dc.relation.senia 204950 es_ES
dc.contributor.funder Ministerio de Asuntos Exteriores y Cooperación


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