Effect of liquid-forming additives on the sintering and mechanical properties of Al2O3/3Y-TZP (30 vol.%) composite

被引：13
|
作者：
Huang, XW [1 ]
Wang, SW [1 ]
Zhao, SK [1 ]
Huang, XX [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2002年 / 37卷 / 10期
关键词：
ceramics; composites; glasses; mechanical properties; microstructure;
D O I：
10.1016/S0025-5408(02)00850-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Al2O3/3Y-TZP (30 vol.%) composite was pressurelessly sintered with addition of TiO2MnO2 and/or CaO-Al2O3-SiO2 glass. It was found that TiO2-MnO2 addition greatly enhanced the densification of the composite by the formation of a low-viscosity liquid at sintering temperature. In contrast, the high-viscosity liquid formed by CaO-Al2O3-SiO2 glass improved mechanical properties because of its repressing effect on grain growth. The composite could be obtained at a temperature as low as 1400degreesC by co-doping with TiO2-MnO2 and CAS glass. Bending strength of 552 +/- 64 MPa and fracture toughness of 6.03 +/- 0.22 MPa m(1/2) were obtained with a doping level of 2 wt.% TiO2-MnO2 and 2 wt.% CAS glass. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1709 / 1719
页数：11
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