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Effects of electrophoretic parameters on chitosan-based nanocomposite coatings

  • A. Molaei
  • Lashgaroo M. 
  • M. YousefpourEmail author
Research
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Abstract

This paper presents the research work carried out in the electrophoretic deposition (EPD) of the chitosan (CS)–based nanocomposite coatings containing bioglass (BG), hydroxyapatite (HA), and halloysite nanotube (HNT) on the titanium (Ti) substrate. The focus was in understanding the effect of process parameters, like the insulation process of electrodes, cathode to anode surface area ratio, applied voltage, and deposition time. Insulated electrodes with a lower cathode to anode surface area ratio were led to more deposition mass. Enhancement of electrophoresis voltage and deposition time achieved more heterogeneous morphology and lower density. The comprehensive mechanism of the CS-based EPD studied the effect of process parameters was exhibited. By the variation of deposition time (0–25 min), the deposition weight (0–3.5 mg/cm2) and thickness changed (0–45 μm). Polarization and impedance analyses indicated that applying a medium voltage led to the formation of a great anti-corrosive coating.

Keywords

Electrophoretic deposition Voltage Deposition time Nanocomposite coating Corrosion 
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Notes

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© Australian Ceramic Society 2019

Authors and Affiliations

  1. 1.Department of Materials Engineering, Tehran Science and Research BranchIslamic Azad UniversityTehranIran
  2. 2.Department of mechanical engineeringTechnical and Vocational University of SemnanSemnanIran
  3. 3.Faculty of Materials and Metallurgical EngineeringSemnan UniversitySemnanIran

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