Microstructure and Mechanical Properties of Al2O3/ZrO2 Composites Prepared by Gelcasting
Microstructure and mechanical properties of zirconia-toughened alumina (ZTA) composite ceramics prepared by gelcasting process were investigated. The results indicated that Al2O3-ZrO2 composites have high bending strength and fracture toughness for the solid loading of the suspension ³ 50vol.%. The bending strength and fracture toughness of sintered ZTA ceramics reach values as high as 631.5 MPa and 7.64 MPa·m1/2, respectively, with solid loading of suspension being 55vol.%. The t-ZrO2 content is increased, and the uniformity of ZrO2 particle distribution is improved in sintered samples prepared by gelcasting compared with those by dry pressing.
Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li
B. X. Jiao et al., "Microstructure and Mechanical Properties of Al2O3/ZrO2 Composites Prepared by Gelcasting", Key Engineering Materials, Vols. 280-283, pp. 1057-1060, 2005