Cylindrical Al2O3/TZP functionally graded materials by EPD

被引：13
|
作者：
Zhao, C [1 ]
Vandeperre, L [1 ]
Vleugels, J [1 ]
Van Der Biest, O [1 ]
机构：
[1] Katholieke Univ Leuven, Dept Met & Mat Engn, B-3001 Heverlee, Belgium
来源：
BRITISH CERAMIC TRANSACTIONS | 2000年 / 99卷 / 06期
关键词：
D O I：
10.1179/096797800681018
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：
Cylindrical Al2O3/Ce-TZP functionally graded composites were fabricated by electrophoretic deposition and pressureless sintering in air. Negatively charged Ce-TZP and Al2O3 powders were deposited on a cylindrical electrode from an acetone based suspension. A continuous composition change is realised by changing the composition of the suspension. Sintering of the FGM at different temperatures, showed that a temperature higher than 1550 degreesC was necessary for densification. The resultant FGM cylinder with 5.6 mm dia. had an ideal mechanical structure: a central open channel, a tough Ce-ZrO2 core (K-Ic > 10 MPa m(1/2)). a continuous gradient interlayer, and a hard surface layer with HV higher than 15 GPa. BCT/443.
引用
收藏
页码：284 / 287
页数：4
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