dc.contributorUniv Palermo
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:18:38Z
dc.date.available2014-05-20T14:18:38Z
dc.date.created2014-05-20T14:18:38Z
dc.date.issued2009-02-01
dc.identifierElectrochimica Acta. Oxford: Pergamon-Elsevier B.V. Ltd, v. 54, n. 5, p. 1395-1402, 2009.
dc.identifier0013-4686
dc.identifierhttp://hdl.handle.net/11449/25622
dc.identifier10.1016/j.electacta.2008.08.074
dc.identifierWOS:000263006100002
dc.identifier6443430122330366
dc.description.abstractThe anodic behaviour of cast Ti-Mo alloys, having different Mo contents (6-20 wt.%), was investigated in acidic and neutral aerated aqueous solutions. All sample showed a valve-metal behaviour, owing to formation and thickening of barrier-type anodic oxides displaying interference colours Growth kinetics. of passive films is influenced by both anodizing electrolyte and composition of the starting alloy. This last parameter was found to change also the solid-state properties of the films, explored by photoelectrochemical and impedance spectroscopy experiments. Thicker films (U(f) = 8 V/MSE) grown on alloys richer in Mo showed more resistive character and a photocurrent sign inversion under negative bias, that revealed an insulating character, whereas corresponding films grown on alloys with lower Mo content, as well as thinner films, behaved as n-type semiconductors. Results are discussed in terms of formation of a mixed Ti-Mo oxide phase. (C) 2008 Elsevier Ltd. All rights reserved
dc.languageeng
dc.publisherPergamon-Elsevier B.V. Ltd
dc.relationElectrochimica Acta
dc.relation5.116
dc.relation1,439
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectTitanium alloys
dc.subjectMolybdenum
dc.subjectAnodic films
dc.subjectPhotocurrent spectroscopy
dc.titlePhoto-electrochemical investigation of anodic oxide films on cast Ti-Mo alloys I. Anodic behaviour and effect of alloy composition
dc.typeArtículos de revistas


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