Journal
CORROSION SCIENCE
Volume 72, Issue -, Pages 35-40Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2013.02.007
Keywords
Alloy; EIS; SEM; Anodic films; Oxide coatings; Passive films
Funding
- CNPq (Conselho Nacional de Desenvolvimento Cientifico e Tecnologico)
- CAPES (Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior)
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Oxide films were formed on the biocompatible alloy Ti-13Nb-13Zr in a phosphate buffer at open-circuit potential (E-oc), potentiodynamically up to 8 V, or by micro-arc oxidation (MAO) at 300 V. Their electrochemical properties were assessed in a phosphate buffer saline solution (PBS). EIS and SEM results showed that the E-oc and potentiodynamically formed oxide films were compact and behave as a monolayer, while the MAO oxide was a bilayered film (compact inner and porous outer layers). Open-circuit potential and EIS resistance values indicated that the MAO oxide provides the best corrosion protection for the alloy in PBS. (C) 2013 Elsevier Ltd. All rights reserved.
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