Formation and sintering of 75 mol% alumina 25 mol% zirconia (2-3.5 mol% yttria) composite powder prepared by the hydrazine method

被引：6
|
作者：
Goto, K
Hirota, K
Yamaguchi, O
Kume, H
Inamura, S
Miyamoto, H
机构：
[1] DOSHISHA UNIV,FAC ENGN,DEPT MOLEC SCI & TECHNOL,TANABE,KYOTO 61003,JAPAN
[2] OSAKA PREFECTURAL INST IND TECHNOL,OSAKA 550,JAPAN
来源：
JOURNAL OF MATERIALS SCIENCE | 1996年 / 31卷 / 01期
关键词：
D O I：
10.1007/BF00355146
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Al2O3/Y2O3-doped ZrO2 composite powders with 25 mol% ZrO2 have been prepared by the hydrazine method. As-prepared powders are the mixtures of AlO(OH) gel solid solutions and amorphous ZrO2. The formation process leading to alpha-Al2O3/t-ZrO2 composite powders is investigated. Hot isostatic pressing has been performed for 1 h at 1500 degrees C under 196 MPa. Dense ZrO2-toughened Al2O3 (ZTA) ceramics with homogeneous-dispersed ZrO2 particles show excellent mechanical properties. The toughening mechanism is discussed.
引用
收藏
页码：204 / 208
页数：5
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