Aqueous gelcasting and pressureless sintering of zirconium diboride foams

被引：27
|
作者：
Wu, Haibo [1 ,3 ]
Yin, Jie [1 ,2 ]
Liu, Xuejian [1 ]
Huang, Zhengren [1 ]
Lee, Sea-Hoon [2 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
[2] Korea Inst Mat Sci, Engn Ceram Res Dept, Chang Won, Gyeongnam, South Korea
[3] Univ Chinese Acad Sci, Beijing, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2014年 / 40卷 / 04期
关键词：
ZrB2; Direct foaming; Compressive strength; Microstructure; MECHANICAL-PROPERTIES; POROUS CERAMICS;
D O I：
10.1016/j.ceramint.2013.10.060
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Direct foaming technique was utilized to fabricate high-performance ZrB2 porous ceramics. 45 vol% ZrB2(-B4C) slurries were prepared, together with polyacrylate dispersant and foaming agent. After gelcasting and pressureless sintering, porous ZrB2 ceramics were obtained. Thanks to the good fluidity and the presence of 2 wt% B4C as the sintering aid, Z-2B ceramic of dense strut and porous structures (55% in porosity) was obtained. Its compressive strength was 79.8 +/- 8.7 MPa. The co-relations between microstructures and mechanical properties of the as-prepared ZrB2 cellular ceramics were also studied. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：6325 / 6330
页数：6
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