Plasma electrolytic oxidation of Ti - W surface alloys synthetized by PVD-LEHCEB

An innovative approach exploiting PVD-coupled Low-Energy High-Current Electron Beam (LEHCEB) and Plasma Electrolytic Oxidation (PEO) techniques were investigated to obtain photoactive TiO 2 -WO 3 mixed films. Ti-W surface alloys containing 14 at.% W were synthetized by PVD deposition of 185 nm thick...

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Bibliographic Details
Published in:Journal of physics. Conference series 2021-11, Vol.2064 (1), p.12065
Main Authors: Morini, F, Franz, S, Vicenzo, A, Bestetti, M
Format: Article
Language:English
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Summary:An innovative approach exploiting PVD-coupled Low-Energy High-Current Electron Beam (LEHCEB) and Plasma Electrolytic Oxidation (PEO) techniques were investigated to obtain photoactive TiO 2 -WO 3 mixed films. Ti-W surface alloys containing 14 at.% W were synthetized by PVD deposition of 185 nm thick W films onto Ti substrates, followed by LEHCEB alloying at 30 kV for 50 pulses. The obtained Ti-W surface alloys were treated by PEO in 1.5 M H 2 SO 4 at constant cell voltage ranging from 100 to 200 V. The resulting mixed oxide films were investigated by XRD, SEM and EDS analysis. Photoelectrochemical properties were determined by linear sweep voltammetry in dark and under UV-C and UV-VIS irradiation.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2064/1/012065