Pressureless sintered 3Y-TZP/20%Al2O3 composite ceramic

被引：2
|
作者：
Yin, BY [1 ]
Wang, LS [1 ]
Lin, JL [1 ]
Zhang, JS [1 ]
Fan, Y [1 ]
机构：
[1] Cent S Univ Technol, State Key Lab Powder Met, Changsha 410083, Peoples R China
来源：
JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY | 2000年 / 7卷 / 01期
关键词：
pressureless sintering; 3Y-TZP/20%Al2O3; composite; phase structure;
D O I：
10.1007/s11771-000-0004-1
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Nanometer 3Y-TZP/20% Al2O3 (mass fraction) composite powders prepared by the chemical coprecipitation method were pressureless sintered at 1550 degreesC for 2 h. Effects of calcining temperatures at 800 degreesC, 1 000 degreesC, and 1 200 degreesC on phase structure, relative density, and Vicker's hardness of the sintered bodies were studied. The results show that 1 000 degreesC was the optimal calcining temperature,and the powder calcined was composed of tetragonal zirconia with the Scherrer crystalline size of 6.3 nm. The relative density was up to 98.5% under pressureless sintering, and the sintered body was t-ZrO2 (without m-ZrO2) + alpha -Al2O3 with the average size of 0.4 mum.
引用
收藏
页码：12 / 14
页数：3
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