Non-aqueous sol-gel derived calcia partially stabilized zirconia: Synthesis and characterizations
Nur Atikah Ab. Ghani, Zuryati Ab-Ghani, Yanny Marliana Baba Ismail, Khairul Anuar Syariff, Ahmad Nazeer Che Mat, Zaihan Ariffin, Tang Liszen, Ahmad Fauzi Mohd Noor
Temperature dependence of the phase transformation of zirconium oxide (ZrO2) retards the overall performance of zirconia in dentistry. This shortcoming can be overcome by using stabilizer such as calcium oxide (CaO). This study highlighted the synthesis of calcia partially stabilized zirconia (CPSZ) prepared by sol-gel method in ethanol and characterized by X-ray diffraction (XRD), Fourier Transform Infrared (FTIR), Field Emission Scanning Electron Microscopy (FESEM) and Brunauer-Emmett-Teller (BET) for the determination of phases, chemical bonding, surface morphology and surface area analysis, respectively. From XRD, the highest occurrences of ZrO2 in the form of cubic and tetragonal can be detected at 2θ = 50o and 31o, respectively while CaO occur at 2θ = 28° suggesting the existence of CPSZ. The FTIR peaks at 482 cm-1 is allocated for Ca-O bond, while peaks at 585 and 765 cm-1 are assigned for Zr-O bond, suggesting the successful preparation of CPSZ by using sol-gel method in ethanolic medium. Furthermore, lower surface area of the CPSZ as compared to commercial ZrO2 powder indicative of incorporation of CaO nanoparticles onto the surface of ZrO2, suggestive of the success in using sol-gel method in preparing CPSZ nanocomposites.