Alumina Toughened Zirconia Nanocomposite Incorporating Al2O3 Whiskers

被引：3
作者：
Aguilar-Elguezabal, A. [1 ]
Bocanegra-Bernal, M. H. [1 ]
机构：
[1] CIMAV SC, Ctr Invest Mat Avanzados, Lab Nacl Nanotecnol, Chihuahua 31109, Mexico
来源：
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2013年 / 10卷 / 02期
关键词：
MECHANICAL-PROPERTIES; FRACTURE-TOUGHNESS; STABILIZED ZIRCONIA; MICROSTRUCTURE; STRENGTH; BEHAVIOR; GLASS; ZRO2; INDENTATION; COMPOSITE;
D O I：
10.1111/j.1744-7402.2012.02759.x
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We investigated the Vickers hardness and fracture toughness of an Al2O3(n)+70wt% ZrO2 (TZ-3Y)n nanocomposite with addition of 2.5wt% Al2O3 whiskers. Densities greater than 95% were reached after conventional sintering at 1500 degrees C. The fracture toughness was increased 62% over pure Al2O3. Microcracking and crack deflection can be the mechanisms responsible to improve the fracture toughness. The use of ATZ composites with a low percent of whiskers can be a promising biomedical material for medical and dental applications given its large increase in fracture toughness over pure alumina and the observed relief from aging issues of zirconia.
引用
收藏
页码：215 / 223
页数：9
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