Processing of the yttria stabilized zirconia-bioactive glass nano composite produced by electrophoretic deposition method

Abstract

The yttria-stabilized zirconia (YSZ) is added to a bioactive glass coating through the electrophoretic deposition (EPD) method to significantly improve the mechanical properties, in particular the bonding strength of the coating on the Ti substrate. In this study, suspensions of bioactive glass and YSZ powder (at the same ratio, 20 g/l) are prepared in ethanol solvent; and tri-ethanol-amine is used as the stabilizer. The effects of the EPD parameters such as deposition time and voltage are studied. The optimum coating quality is achieved at a voltage of 60 V for 10 min. After coating, sintering is performed at three different temperatures (800, 850, and 900 °C). The XRD is used to identify the structure and phase of yttria-stabilized zirconia powders and the coated samples. FE-SEM is also employed to assess the microstructure of the specimens. The highest adhesion strength ($$\sim$$ ∼ 4.38 MPa) is obtained at the sintering temperature of 850 °C.