Composite Polymer-Containing Protective Layers on Titanium

S. V. Gnedenkov, S. L. Sinebryukhov, D. V. Mashtalyar, V. S. Egorkin, A. K. Tsvetnikov, and A. N. Minaev

Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia

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Received March 21, 2007

Abstract — The influence of treating the coatings obtained by plasma electrolytic oxidation (PEO) and various fractions of polytetrafluoroethylene on the state of the surface of formed composite layers has been studied by electrochemical impedance spectroscopy, differential thermal analysis, and thermogravimetry. Differences in the resistance to charge transfer at the oxide heterostructure/electrolyte interface for various composite layers have been found. The obtained data significantly enlarge and complement the possibilities of directly forming protective coatings, including antiscale ones, on the surface of titanium alloys operating in aggressive media at high temperatures.