Study of the effect of current pulse frequency on Ti-6Al-4V alloy coating formation by micro arc oxidation

Alexander Sobolev; Alexey Kossenko; Konstantin Borodianskiy

doi:10.3390/ma12233983

Study of the effect of current pulse frequency on Ti-6Al-4V alloy coating formation by micro arc oxidation

Alexander Sobolev, Alexey Kossenko, Konstantin Borodianskiy

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

42 Scopus citations

Abstract

The micro arc oxidation (MAO) process has been applied to produce ceramic oxide coating on Ti-6Al-4V alloy. The MAO process was carried out at the symmetric bipolar square pulse in electrolyte containing Na₂CO₃ and Na₂SiO₃. The effect of current frequency on the surface morphology, the chemical and the phase compositions as well as the corrosion resistance was examined. Morphology and cross-sectional investigation by electron microscopy evaluated more compacted and less porous coating produced by high current frequency (1000 Hz). This alloy also exhibited a high corrosion resistance in comparison with the untreated alloy. Additionally, the alloy subjected to MAO treatment by a current frequency of 1000 Hz showed a higher corrosion resistance in comparison with alloys obtained by lower current frequencies. This behavior was attributed to more compacted and less porous morphology of the coating.

Original language	English
Article number	3983
Journal	Materials
Volume	12
Issue number	23
DOIs	https://doi.org/10.3390/ma12233983
State	Published - 1 Dec 2019

Keywords

Corrosion resistance
Current pulse frequency
Micro arc oxidation
Ti-6Al-4V alloy
Titanium oxide

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10.3390/ma12233983

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title = "Study of the effect of current pulse frequency on Ti-6Al-4V alloy coating formation by micro arc oxidation",

abstract = "The micro arc oxidation (MAO) process has been applied to produce ceramic oxide coating on Ti-6Al-4V alloy. The MAO process was carried out at the symmetric bipolar square pulse in electrolyte containing Na2CO3 and Na2SiO3. The effect of current frequency on the surface morphology, the chemical and the phase compositions as well as the corrosion resistance was examined. Morphology and cross-sectional investigation by electron microscopy evaluated more compacted and less porous coating produced by high current frequency (1000 Hz). This alloy also exhibited a high corrosion resistance in comparison with the untreated alloy. Additionally, the alloy subjected to MAO treatment by a current frequency of 1000 Hz showed a higher corrosion resistance in comparison with alloys obtained by lower current frequencies. This behavior was attributed to more compacted and less porous morphology of the coating.",

keywords = "Corrosion resistance, Current pulse frequency, Micro arc oxidation, Ti-6Al-4V alloy, Titanium oxide",

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N2 - The micro arc oxidation (MAO) process has been applied to produce ceramic oxide coating on Ti-6Al-4V alloy. The MAO process was carried out at the symmetric bipolar square pulse in electrolyte containing Na2CO3 and Na2SiO3. The effect of current frequency on the surface morphology, the chemical and the phase compositions as well as the corrosion resistance was examined. Morphology and cross-sectional investigation by electron microscopy evaluated more compacted and less porous coating produced by high current frequency (1000 Hz). This alloy also exhibited a high corrosion resistance in comparison with the untreated alloy. Additionally, the alloy subjected to MAO treatment by a current frequency of 1000 Hz showed a higher corrosion resistance in comparison with alloys obtained by lower current frequencies. This behavior was attributed to more compacted and less porous morphology of the coating.

AB - The micro arc oxidation (MAO) process has been applied to produce ceramic oxide coating on Ti-6Al-4V alloy. The MAO process was carried out at the symmetric bipolar square pulse in electrolyte containing Na2CO3 and Na2SiO3. The effect of current frequency on the surface morphology, the chemical and the phase compositions as well as the corrosion resistance was examined. Morphology and cross-sectional investigation by electron microscopy evaluated more compacted and less porous coating produced by high current frequency (1000 Hz). This alloy also exhibited a high corrosion resistance in comparison with the untreated alloy. Additionally, the alloy subjected to MAO treatment by a current frequency of 1000 Hz showed a higher corrosion resistance in comparison with alloys obtained by lower current frequencies. This behavior was attributed to more compacted and less porous morphology of the coating.

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Study of the effect of current pulse frequency on Ti-6Al-4V alloy coating formation by micro arc oxidation

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