Corrosion of the component phases presents in high copper dental amalgams. Application of electrochemical impedance spectroscopy and electrochemical noise analysis

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniv Coimbra
dc.date.accessioned2014-05-20T14:17:58Z
dc.date.accessioned2022-10-05T15:14:58Z
dc.date.available2014-05-20T14:17:58Z
dc.date.available2022-10-05T15:14:58Z
dc.date.created2014-05-20T14:17:58Z
dc.date.issued2005-03-01
dc.identifierCorrosion Science. Oxford: Pergamon-Elsevier B.V., v. 47, n. 3, p. 635-647, 2005.
dc.identifier0010-938X
dc.identifierhttp://hdl.handle.net/11449/25398
dc.identifier10.1016/j.corsci.2004.07.004
dc.identifierWOS:000226769300008
dc.identifier6443430122330366
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3898506
dc.description.abstractThe corrosion resistance of three of the constituent phases in high copper dental amalgams has been investigated by electrochemical methods in 0.9% NaCl solution. Polarization curves show corrosion potentials most positive for gamma(1)-Ag2Hg3, followed by Ag-Cu, and gamma-Ag3Sn in agreement with the order of corrosion resistance deduced from the corrosion currents. Complex plane impedance plots at the open circuit potential showed distorted semicircles with diffusional components at low frequency for Ag-Hg and Ag-Cu, while for gamma-Ag3Sn a layer of corrosion products is formed, partially or completely covering the surface of the electrode. Impedance and noise spectra have been compared in the frequency domain, and show good agreement. (C) 2004 Elsevier Ltd. All rights reserved.
dc.languageeng
dc.publisherElsevier B.V.
dc.relationCorrosion Science
dc.relation4.862
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectdental amalgams
dc.subjectamalgam phases
dc.subjectelectrochemical impedance spectroscopy (EIS)
dc.subjectelectrochemical noise analysis
dc.subjectchloride corrosion
dc.titleCorrosion of the component phases presents in high copper dental amalgams. Application of electrochemical impedance spectroscopy and electrochemical noise analysis
dc.typeArtigo


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