IOP Conference Series Materials Science and Engineering · 2018 · 10 citations · 15 references
Natural SciencesMaterials EngineeringMaterials ScienceElectrochemistryNanomaterialsSurface ScienceCorrosion ResistanceCorrosion-resistant MaterialsElectrode MaterialsElectrode-electrolyte InterfacesElectrolyte SolutionsMetal OxidesCurrent DensityElectrochemical CharacterizationElectrode CoatingsElectrolyte CompositionNanostructured Electrode MaterialsPhase CompositionThin Oxide FilmsTitanium Oxides
The structure and the properties of the oxide films formed on titanium in the diphosphate based electrolytes by means of plasma electrolytic oxidizing at direct current density of 2-2.5 A·dm⁻² have been studied. Oxide layers of different composition and content of alloying elements were obtained by modification of electrolytes and variation in current density. The interelectrode voltage during PEO, chemical and phase composition, topography and microstructure of the formed layers depend on the electrolyte composition and applied current density. The spark-discharge regime was shown to be reached at inter-electrode voltage 100 to 130 V depending on the composition of electrolyte. The effect of chemical composition and surface morphology formed mixed oxide films on the corrosion resistance and catalytic activity has been discussed.
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Plasma electrolysis for surface engineering
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