Microstructure and Mechanical Properties of Al₂O₃/ZrO₂ Composites Prepared by Gelcasting

Abstract:

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.

• Periodical: Key Engineering Materials (Volumes 280-283)
• Pages: 1057-1060
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.280-283.1057
• Online since: February 2007
• Authors: Bao Xiang Jiao, Tai Qiu, Chun Cheng Li, Chun Ying Shen
• Keywords: Al₂O₃-ZrO₂ Composites, Gelcasting, Microstructure, Property Analysis

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