Microstructure and mechanical properties of aluminum nitride co-doped with cerium oxide via hot-pressing sintering

被引：35
|
作者：
Li, Qinggang [1 ,2 ]
Wang, Zhi [1 ]
Wu, Chao [1 ]
Cheng, Xin [1 ,2 ]
机构：
[1] Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Peoples R China
[2] Shandong Prov Key Lab Preparat & Measurement Bldg, Jinan 250022, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 640卷
基金：
中国国家自然科学基金;
关键词：
CeO2; Mechanical properties; Microstructure; Thermal conductivity; Hot-pressing sintering; ALN CERAMICS; THERMAL-CONDUCTIVITY; ADDITIVES; PHASE; COMPOSITES; OXYGEN; Y2O3; CEO2;
D O I：
10.1016/j.jallcom.2015.03.235
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effects of hot-pressing sintering of CeO2 additive on the densification behaviors and microstructural development of AlN ceramics are investigated. CeO2 additive can improve the physical and mechanical properties, thermal conductivity, and purification of the grain boundaries. The resulting AlN ceramic exhibits a flexural strength of 387.9 MPa, a fracture toughness of 3.34 MPa m(1/2), a Vickers, hardness of 12.68 GPa, a thermal conductivity of 168.3 Wm(-1) K-1, and a relative density of 99.59%. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：275 / 279
页数：5
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