A novel development of ZrB2/ZrO2 functionally graded ceramics for ultrahigh-temperature application

被引：27
|
作者：
Zhang, Xinghong [1 ]
Li, Weijie [1 ]
Hong, Changqing [1 ]
Han, Wenbo [1 ]
Han, Jiecai [1 ]
机构：
[1] Harbin Inst Technol, Ctr Composite Mat, Harbin 150001, Peoples R China
来源：
SCRIPTA MATERIALIA | 2008年 / 59卷 / 11期
基金：
中国国家自然科学基金;
关键词：
ZrB2/ZrO2; Functionally graded ceramics; SPS; Mechanical properties;
D O I：
10.1016/j.scriptamat.2008.08.014
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
ZrB2/ZrO2 functionally graded ceramics (FGCs), newly developed for ultrahigh-temperature application, were prepared by spark plasma sintering. Denser graded microstructure as well as a "strong" interface were achieved for ZrB2/ZrO2 FGC sintered at 1800 degrees C. Due to the phase transformation of ZrO2, the toughness of ZrB2/ZrO2 FGCs was increased from similar to 5 MPa m(1/2) for the ZrB2-rich layer to similar to 10 MPa m(1/2) for the ZrO2-rich layer. The effect of sintering temperature on the toughness of ZrB2/ZrO2 FGCs was further investigated. (c) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1214 / 1217
页数：4
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