Formation, powder characterization and sintering of MgCr2O4 by the hydrazine method

被引：0
|
作者：
Yoshida, N [1 ]
Takano, Y
Yoshinaka, M
Hirota, K
Yamaguchi, O
机构：
[1] Doshisha Univ, Dept Mol Sci & Technol, Kyoto 6100321, Japan
[2] Tanaka Galvanizing Co Ltd, Osaka 5550012, Japan
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1998年 / 81卷 / 08期
关键词：
D O I：
暂无
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：
Picrochromite (MgCr2O4) crystallizes at 480 degrees to 530 degrees C from an amorphous material prepared by the hydrazine method. The MgCr2O4 powders were characterized for particle size and surface area. Individual particles tend toward a hexagonal morphology above 1000 degrees C. Dense MgCr2O4 ceramics (99.5% of theoretical) with an average grain size of 2 mu m have been fabricated by spark plasma sintering for 5 min at 1400 degrees C and 30 MPa. Their fracture toughness and bending strength are 3.7 MPa.m(1/2) and 310 MPa, respectively.
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页码：2213 / 2215
页数：3
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