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Influence of caffeine and temperature on corrosion-resistance of CoCrMo alloy

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Influence of caffeine and temperature on corrosion-resistance of CoCrMo alloy

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dc.contributor.author Romas, Manuela es_ES
dc.contributor.author Igual Muñoz, Anna Neus es_ES
dc.contributor.author Mareci, Daniel es_ES
dc.contributor.author Valero Vidal, Carlos es_ES
dc.contributor.author Curteanu, Silvia es_ES
dc.contributor.author Sutiman, Daniel es_ES
dc.date.accessioned 2016-10-04T10:21:38Z
dc.date.available 2016-10-04T10:21:38Z
dc.date.issued 2014-08
dc.identifier.issn 0366-6352
dc.identifier.uri http://hdl.handle.net/10251/71101
dc.description.abstract The inhibitory activity of caffeine (1,3,7-trimethyl xanthine) on artificial saliva was studied on a CoCrMo alloy using different electrochemical methods: open circuit potential (OCP), potentiodynamic measurements and electrochemical impedance spectroscopy (EIS). The results show that caffeine produces an inhibitory effect on the anodic currents due to its adsorption on the surface of the alloy. Temperature is another parameter with an influence on corrosion processes, so thermodynamic data were obtained from Arrhenius plots and Langmuir adsorption isotherms. The protective action of caffeine is enhanced at high temperatures at OCP, while for potentiodynamic experiments high temperatures block the inhibitory activity of caffeine and the corrosion rate increases. The process may also be studied by a simulation, determining the functional dependence between OCP, corrosion current density (i (corr)), corrosion potential (E (corr)), breakdown potential (E (bd)) and temperature and amount of caffeine in artificial saliva, for HeraeniumA (R) CE. The neural network-based methodology applied in this work provides accurate results, thus proving to be an efficient modelling technique. es_ES
dc.description.sponsorship This study was performed with the support of the EURODOC "Doctoral Scholarships for Research Performance at European Level" project, financed by the European Social Fund and the Romanian Government. en_EN
dc.language Inglés es_ES
dc.publisher Springer Verlag (Germany) es_ES
dc.relation EURODOC "Doctoral Scholarships for Research Performance at European Level" project es_ES
dc.relation European Social Fund es_ES
dc.relation Romanian Government es_ES
dc.relation.ispartof Chemical Papers es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject CoCrMo alloy es_ES
dc.subject caffeine es_ES
dc.subject electrochemical analysis es_ES
dc.subject inhibitory activity es_ES
dc.subject neural networks es_ES
dc.subject.classification INGENIERIA QUIMICA es_ES
dc.title Influence of caffeine and temperature on corrosion-resistance of CoCrMo alloy es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.2478/s11696-014-0549-3
dc.rights.accessRights Cerrado 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 Romas, M.; Igual Muñoz, AN.; Mareci, D.; Valero Vidal, C.; Curteanu, S.; Sutiman, D. (2014). Influence of caffeine and temperature on corrosion-resistance of CoCrMo alloy. Chemical Papers. 68(8):1066-1078. doi:10.2478/s11696-014-0549-3 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.2478/s11696-014-0549-3 es_ES
dc.description.upvformatpinicio 1066 es_ES
dc.description.upvformatpfin 1078 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 68 es_ES
dc.description.issue 8 es_ES
dc.relation.senia 284071 es_ES
dc.identifier.eissn 1336-9075


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