Journal
CORROSION SCIENCE
Volume 87, Issue -, Pages 334-343Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2014.06.042
Keywords
Titanium; Zirconium; EIS; XPS; Passive films
Funding
- Romanian National Authority for Scientific Research (CNCS-UEFISCDI) [PN-II-ID-PCE-2011-3-0218]
- Spanish Ministry of Economy and Competitiveness (MINECO, Madrid, Spain)
- European Regional Development Fund [CTQ2012-36787]
- Spanish Ministry of Science and Innovation
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The electrochemical behaviour of Zr5Ti, Zr25Ti, and Zr45Ti, with and without surface modification were monitored in acidic artificial saliva (pH = 3) containing NaF concentrations 0.2, 0.5, and 1 wt.%, simulating the fluoride concentrations in dental rinses. A passive behaviour for thermally oxidized ZrTi alloys was found using EIS, and XPS data show that the protective oxide film contains both TiO2 and ZrO2, though titanium contents in the outer layer bigger than those in the base alloy result from thermal oxidation. High corrosion resistance to acidic fluoridated environments of ZrTi alloys treated using thermal oxidation in air at 500 degrees C. (C) 2014 Elsevier Ltd. All rights reserved.
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