Yttria stabilized tetragonal zirconia ceramics: preparation, characterization and applicationspplications

Abstract

In this study, yttria stabilized tetragonal zirconia (YSTZ) ceramics were prepared and were sintered at different temperatures to find out the optimum sintering temperature for their better tetragonality and mechanical properties for their application as optical ferrule. Vicker’s hardness was performed by micro hardness tester and it was found to increase with the increase of sintering temperature to a maximum value, then it was decreased with higher sintering temperature. Water absorptivity and porosity were also seen to decrease as the densities of the specimens were increased. X-ray diffraction was employed to determine crystal structure of sintered samples. Surface morphology of the sintered samples was examined through field emission scanning electron microscope.Bangladesh J. Sci. Ind. Res.53(2), 111-116, 2018

Effect of Temperature on Zirconia Powder Synthesized from Amang Zirconium Oxychloride Precursor

“…Zirconia is a polymorphic material suitable to be used in many fields such as in dentistry, aerospace, optical ceramic, and glaze coating due to its excellent properties [1][2][3]. It has high melting and boiling points, low thermal conductivity, inert and unreactive [4].…”

Effect of gadolinia addition on the mechanical and physical properties of zirconia/ceria ceramics

“…Additives used to stabilize zirconia not only produce crack-free zirconia, but also the sintered compact can retain the high temperature phase, i.e., the tetragonal phase at room temperature, where the equilibrium phase is monoclinic [1,2]. Among all zirconia ceramics, yttria tetragonal zirconia polycrystals (YTZPs) are the most attractive, for wide range of energy and biomedical applications, due to their unusual combination of excellent mechanical properties (i.e., high strength and high fracture toughness), as well as low thermal conductivity and biocompatibility [3][4][5][6][7][8][9][10].…”