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Sintering and microstructure of mullite-Mo composites

被引：14
作者：
Jayaseelan, DD [1 ]
Rani, DM
Nishikawa, T
Awaji, H
Ohji, T
机构：
[1] Natl Inst Adv Ind Sci & Technol, AIST, Synergy Mat Res Ctr, Moriyama Ku, Nagoya, Aichi 4638687, Japan
[2] Nagoya Inst Technol, Dept Mat Sci & Engn, Nagoya, Aichi 4668555, Japan
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2002年 / 22卷 / 07期
关键词：
densification; mechanical properties; microstructure-final; mullite/Mo; pulse electric current sintering; sintering;
D O I：
10.1016/S0955-2219(01)00421-6
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：
Mullite-Mo composites of different compositions (0-100 vol.% Mo) were sintered to near theoretical density by pulse electric current sintering (PECS). The densification behaviour and the microstructure of mullite-Mo composites as a function of Mo content were studied. The addition of 10 vol.% Mo significantly enhanced the strength and toughness of monolithic mullite to 556 MPa and 2.9 MPa M-1/2, respectively. SEM observations revealed the modification of discrete isolated Mo particles to continuosly interconnected network with the increase in the Mo content. Mo grains were located at the grain boundaries as well as inside the mullite grains. The addition of Mo to monolithic mullite led to a change in the fracture mode. (C) 2002 Elsevier Science Ltd. All rights reserved.
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页码：1113 / 1117
页数：5
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