Electrophoretic deposition of Ni/SiO2 nanocomposite coating: Fabrication process and tribological and corrosion properties

Isfahani, A. G ; Sharif University of Technology

885 Viewed
  1. Type of Document: Article
  2. DOI: 10.4028/www.scientific.net/JNanoR.26.45
  3. Abstract:
  4. To the best of our knowledge, this work presents the first successful effort to fabricate and study nanostructured Ni-based composite coatings using the electrophoretic deposition method with nanostructured SiO2 particles. In this work, Ni/SiO2 nanoparticle composite coatings were prepared by electrophoretic deposition (EPD) [1] and their hardness, wear and corrosion resistances [2] were examined. After studying the morphology of the coatings and finding the optimum conditions for uniform coating, in order to improve the mechanical properties as well as resistance to corrosion, sintering was performed. The Ni/SiO2 nanocomposite coatings show excellent hardness (∼376 HV), reduced Young's modulus (∼180 GPa), contact stiffness (∼110 μN/Nm) as well as the wear and corrosion resistances which are considered in the different SiO2 concentrations and particle sizes. In addition, by controlling the size of the SiO2 particles, in optimum coating voltage and proper time duration, hardness and wear resistance of nanocomposite coatings were controlled
  5. Keywords:
  6. Electrophoretic deposition (EPD) ; Hardness ; Nanocomposite coating ; Nickel (Ni) nanoparticle ; SiO2 nanoparticle ; Wear resistance ; Corrosion property ; Electrophoretic deposition methods ; Electrophoretic depositions ; Fabrication process ; Nano-composite coating ; Ni-based composite coating ; Optimum conditions ; Wear and corrosion resistance ; Composite coatings ; Corrosion resistance ; Elastic moduli ; Electrophoresis ; Nanocomposites ; Nanoparticles ; Nickel ; Nickel coatings ; Sintering ; Deposition
  7. Source: Journal of Nano Research ; Volume 26 , 6 January , 2014 , Pages 45-51 ; ISSN: 16625250
  8. URL: http://www.scientific.net/JNanoR.26.45