Effects of Al₂O₃ Addition on Mechanical Properties and Microstructures of Y-TZP

Isothermal Tetragonal-to-Monoclinic Phase Transformation in a Zirconia–Yttria System

“…There have been many reports [26][27][28][29][30] that the addition of alumina improved the mechanical properties, hardness, 27) bending strength, 27,30) fracture toughness, 27,30) thermal shock resistance 26) and so on. 28) Figure 13 shows the typical improvement in mechanical properties, the critical stress intensity factors, by a small addition of alumina to 3Y.…”

“…[26][27][28][29][30] This article summarizes the isothermal transformation behavior in this zirconia-yttria system with and without alumina addition and discusses the transformation mechanism related to the mechanical properties.…”

Phase Stability and Mechanical Properties of Zirconia and Zirconia Composites

“…The ceria content is then the most likely reason for the different aging behavior of the materials presented in the literature and 10 mol% ceria may not be sufficient to provide long‐term phase stability for zirconia in water. Several influencing factors have been proposed that can significantly affect the aging phenomenon in zirconia ceramics, for example, grain size, density, phase assemblage, residual stresses and surface finish, processing, the effect of stabilizer, influence of alumina as the interstitial phase, and different hydrothermal conditions.…”

Texture Formed by Platelet Alignment in Ceramic Platelet Ceramic Matrix Composites

“…Varying degrees of success 54 W-Y. LI AND O. T. SORENSEN have been achieved by reinforcing zirconia with alumina particles (Tsukuma et al, 1985a(Tsukuma et al, , 1985bSato et al, 1987Sato et al, , 1988Kihara et al, 1988), whiskers (Roberts et al, 1991), and platelets (Heussner and Claussen, 1989; Huang and Nicholson, 1993). The toughening effect is considered to increase with the increase of the aspect ratio of the reinforcement.…”