Alumina Toughened Zirconia Nanocomposite Incorporating Al2O3 Whiskers

被引：4

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

页码：215 / 223

页数：9

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