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

页码：12 / 14

页数：3

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