Coating Evaluation of Nanocomposite Mixture of TiO2 and ZrO2 by Electrophoretic Deposition and Dip Techniques on Commercially Pure Titanium
Author(s): Rawaa Z.H. Zwain, Thekra I. Hamad
This study aim to Development of implant surface modification by electrophoretic deposition and dipping methods of nanocomposite mixture of TiO2 and ZrO2 with different percentage of mixing to increase surface roughness and microhardness. Grade (II) commercial pure titanium rod was machined into discs shaped. Discs were divided into 3 groups according to the types of coating used for each percentage: 1st group coated by nanocomposite mixture of titanium and zirconium using electrophoretic deposition, 2nd group coated by the same mixture former using dip technique, 3rd group uncoated commercially pure titanium. Each group were evaluated by using optical microscope, X-ray diffraction analysis, Atomic Force Microscope, Scanning Electron Microscope, Energy-Dispersive X-ray investigations and Vickers microhardness measurements. By comparing between the three groups (EPD, dip and uncoated samples), the EPD coated sample technique was higher in surface roughness and microhardness test. However, Coating of commercially pure titanium with Nano composite mixture 70% TiO2 and 30% ZrO2 having more surface roughness than coated with nanocomposite mixture of 50% TiO2 and 50% ZrO2.