• English
  • Deutsch
  • Log In
    Password Login
    Research Outputs
    Fundings & Projects
    Researchers
    Institutes
    Statistics
Repository logo
Fraunhofer-Gesellschaft
  1. Home
  2. Fraunhofer-Gesellschaft
  3. Artikel
  4. Sepiolite reinforced PEO layer on AZ 31
 
  • Details
  • Full
Options
2023
Journal Article
Title

Sepiolite reinforced PEO layer on AZ 31

Abstract
The present work deals with the investigation of the incorporation of nanosized ceramic particles (sepiolite) into an oxide layer formed on magnesium alloy AZ31 by plasma electrolytic oxidation (PEO). The actual (true) surface area of the sepiolite particles was determined to be 300 m2 g-1. The particles were exclusively electrostatically stabilized in the used electrolyte without visible sedimentation, at least over 27 days. Using a current controlled pulse regime, the particles are incorporated into the oxide layer simultaneously to the PEO process. The study clearly reveals that the movement and deposition of the particles is based on electrophoresis. Considering the measured mobility of the particles of μ ≈ 6 μm cm V-1 s-1 and a very low field strength in the electrolyte (0.4 V cm-1) the particles velocity was calculated to υ ≈ 2.4 μm s-1. The mass of deposited sepiolite was estimated to approximately 1.2 mg cm-2 under the chosen conditions. The fixation of the deposited particles is caused by sintering due to the heat development of the plasma discharge events.
Author(s)
Schneider, Michael
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS  
Kremmer, Kerstin  
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS  
Fürbeth, Wolfram
Gesellschaft für Chemische Technik und Biotechnologie -DECHEMA-  
Lederer, Stephan
Gesellschaft für Chemische Technik und Biotechnologie -DECHEMA-  
Sottor, Robert
Gesellschaft für Chemische Technik und Biotechnologie -DECHEMA-  
Journal
Surface and coatings technology  
DOI
10.1016/j.surfcoat.2023.129369
Language
English
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS  
Keyword(s)
  • AZ 31

  • Plasma electrolytic oxidation

  • Sepiolite particle incorporation

  • Cookie settings
  • Imprint
  • Privacy policy
  • Api
  • Contact
© 2024