Microstructure and mechanical properties of NdAlO3/Al2O3 nanocomposite

被引：7
|
作者：
Jin, XH [1 ]
Gao, L [1 ]
机构：
[1] Chinese Acad Sci, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2003年 / 354卷 / 1-2期
关键词：
Al2O3; NdAlO3; nanocomposite; microstructure; mechanical properties;
D O I：
10.1016/S0921-5093(03)00033-9
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
NdAlO3/Al2O3 nanocomposite was prepared by a coprecipitation method. It was found that the stabilizing effect of Nd2O3 on gamma-Al2zO3 rendered alpha-Al2O3 form at higher temperature than usual. NdAlO3/Al2O3 nanocomposite showed a much better sinterability than Al2O3, and the NdAlO3 was exclusively rhombohedral in the sintered samples. SEM observation verified that NdAlO3 strongly restricted Al2O3 grain growth when the NdAlO3 content was low, however, this effect decreased as the NdA103 content was increased to 20 vol.%. Significant improvements in the mechanical properties of Al2O3 were realized when it formed nanocomposite with an appropriate amount of NdAlO3. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：326 / 330
页数：5
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