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Combined Galvanostatic and Potentiostatic Plasma Electrolytic Oxidation of Titanium in Different Concentrations of H2SO4

1
Abteilung für Materialwissenschaft, Institut für Experimentelle Physik der kondensierten Materie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
2
Institut für Pharmazeutische Technologie und Biopharmazie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
3
Abteilung für Bioanorganische Chemie, Institut für Anorganische Chemie und Strukturchemie I, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
*
Author to whom correspondence should be addressed.
Metals 2018, 8(6), 386; https://doi.org/10.3390/met8060386
Received: 29 April 2018 / Revised: 18 May 2018 / Accepted: 21 May 2018 / Published: 26 May 2018
(This article belongs to the Special Issue Plasma Electrolytic Oxidation)
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Abstract

We report on plasma electrolytic oxidation of titanium, employing a technique with combined potentiostatic and galvanostatic control. The effect of different H 2 SO 4 electrolyte concentrations on the titanium oxide formation was studied sytematically. The titanium oxide consisted of two distinguishable layers. The upper layer is porous, up to few micrometers thick and primarily rutile, while the interlayer is compact, comparatively thin and is associated to anatase formation. The electrolyte concentration changed substantially layer thickness, porosity and phase composition, as deduced from scanning electron microscopy, X-ray diffraction and Raman spectroscopy. View Full-Text
Keywords: titanium dioxide; plasma electrolytic oxidation (PEO) titanium dioxide; plasma electrolytic oxidation (PEO)
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Engelkamp, B.; El Achhab, M.; Fischer, B.; Kökçam-Demir, Ü.; Schierbaum, K. Combined Galvanostatic and Potentiostatic Plasma Electrolytic Oxidation of Titanium in Different Concentrations of H2SO4. Metals 2018, 8, 386.

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