Effect of anode position on the incorporation of nano/microparticles during the PEO coating on AZ31B

Esmaeili, M ; Sharif University of Technology | 2021

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  1. Type of Document: Article
  2. DOI: 10.1016/j.apsadv.2021.100147
  3. Publisher: Elsevier B.V , 2021
  4. Abstract:
  5. In this study, the influence of the sample position (anode) on the incorporation of nano/micro alumina particles on the AZ31B magnesium alloy substrate was investigated by plasma electrolytic oxidation (PEO) coating. For characterized this effect, Scanning electron microscopy (SEM), potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), and pin-on-disk test were used to the evolution of the microstructure, corrosion resistance, and the wear behavior of the films. Based on the obtained results, the effect of the anode position from vertical to horizontal is dependent on particle size and it can be influenced only on the incorporation of nanoparticles. The experimental corrosion tests showed that maximum corrosion resistance occurred in the horizontal position of the anode electrode in the presence of alumina nanoparticles in the optimum condition (current density was reduced up to 1.8 nA/cm2 and the wear rate has decreased to 27 µg/N.m). © 2021 The Authors
  6. Keywords:
  7. Alumina ; Anode position ; Corrosion ; Magnesium ; Plasma electrolytic oxidation ; Wear
  8. Source: Applied Surface Science Advances ; 2021 , Volume 6 ; 26665239 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S2666523921000933