Forming and sintering of in situ alumina composite with hydraulic inorganic binder

被引:3
|
作者
Nagaoka, T [1 ]
Iwamoto, Y
Kikuta, K
Hirano, S
机构
[1] Fine Ceram Res Assoc, Synergy Ceram Lab, Nagoya, Aichi 4568587, Japan
[2] Nagoya Univ, Grad Sch Engn, Nagoya, Aichi 4648603, Japan
关键词
D O I
10.1111/j.1151-2916.2000.tb01439.x
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
Two types of barium aluminate binders were prepared by heat treatment of barium aluminate precursors, synthesized by using solution processes, at low temperatures (T < 500 degrees C). One was barium monoaluminate (BaAl2O4), and the other was barium aluminate binder (BAH binder) composed of amorphous phase, barium aluminate monohydrate (BaAl2O4. H2O), and BaAl2O4. The setting time of the BAH binder was controlled by adjusting the heat-treatment temperature of the BAH binder precursor. The addition of the synthesized BaAl2O4 powders to Al2O3 powders improved the bending strength of Al2O3 matrix green bodies. The synthesized BaAl2O4 powders led to the in situ forming of barium hexaaluminate (BaO . xAl(2)O(3), x = 6.9: BA6) platelets in the matrix by reacting with Al2O3 during sintering, The formed BA6 platelets inhibited the grain growth of the matrix Al2O3 grains.
引用
收藏
页码:1613 / 1616
页数:4
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