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The Study of Surface Microgeometry and Morphology of Plasma Electrolytic Oxidation Dielectric Coatings on Aluminum Alloys

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Advances in Design, Simulation and Manufacturing II (DSMIE 2019)

Part of the book series: Lecture Notes in Mechanical Engineering ((LNME))

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Abstract

The article focuses on the results of the surface microgeometry and morphology research of the plasma electrolytic oxidation (PEO) coatings produced in the alkaline-silicate electrolytes in various electricity modes—galvanostatic (GS) and arbitrarily falling power (AFP) in alternating current modes. PEO coatings were formed on the samples of wrought aluminum alloys, which are normally used for the manufacturing of the diamond grinding wheels bodies. The influence of PEO factors on Ra roughness index as well as porosity, shape and size of the structural particles of the coatings surface was studied. It was established that PEO increases the reference Ra value by a factor of 2…6, depending upon the electrolyte composition and the processing mode. The “liquid glass” (a technical-grade sodium silicate solution) concentration is the key driver of Ra index, its decrease from 12 to 6 g/L leads to roughness reduction by 25…40%. An extreme dependence of Ra index on anode current density in GS mode is identified in the electrolytes with the minimal concentration of the alkaline component of KOH solution. It was demonstrated that the morphology research results qualitatively correlate with the microgeometric and functional coating characteristics.

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Author information

Authors and Affiliations

  1. National Technical University «Kharkiv Polytechnic Institute», 2 Kyrpychova St., Kharkiv, 61002, Ukraine

    Elena Sevidova, Yuriy Gutsalenko, Aleksandr Rudnev & Larisa Pupan

  2. National Academy of the National Guard of Ukraine, 3 Maidan Zakhysnykiv Ukrainy, Kharkiv, 61001, Ukraine

    Oksana Titarenko

Authors
  1. Elena Sevidova
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  2. Yuriy Gutsalenko
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  3. Aleksandr Rudnev
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  4. Larisa Pupan
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  5. Oksana Titarenko
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Corresponding author

Correspondence to Elena Sevidova .

Editor information

Editors and Affiliations

  1. Sumy State University, Sumy, Ukraine

    Vitalii Ivanov

  2. Poznan University of Technology, Poznań, Poland

    Justyna Trojanowska

  3. University of Minho, Guimaraes, Portugal

    Jose Machado

  4. Sumy State University, Sumy, Ukraine

    Oleksandr Liaposhchenko

  5. Prešov, Slovakia

    Jozef Zajac

  6. Sumy State University, Sumy, Ukraine

    Ivan Pavlenko

  7. University of West Bohemia, Pilsen, Czech Republic

    Milan Edl

  8. University of Zagreb, Zagreb, Croatia

    Dragan Perakovic

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Sevidova, E., Gutsalenko, Y., Rudnev, A., Pupan, L., Titarenko, O. (2020). The Study of Surface Microgeometry and Morphology of Plasma Electrolytic Oxidation Dielectric Coatings on Aluminum Alloys. In: Ivanov, V., et al. Advances in Design, Simulation and Manufacturing II. DSMIE 2019. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-030-22365-6_30

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  • DOI: https://doi.org/10.1007/978-3-030-22365-6_30

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-22364-9

  • Online ISBN: 978-3-030-22365-6

  • eBook Packages: EngineeringEngineering (R0)

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