Superplasticity in GeO2-doped TZP

被引：7
|
作者：
Mimurada, J
Kondo, T
Takigawa, Y
Ikuhara, Y
Sakuma, T
机构：
[1] Univ Tokyo, Fac Engn, Dept Mat Sci, Bunkyo Ku, Tokyo 1138656, Japan
[2] Japan Fine Ceram Ctr, Nagoya, Aichi, Japan
来源：
TOWARDS INNOVATION IN SUPERPLASTICITY II | 1999年 / 304-3卷
关键词：
superplasticity; TZP; ductility;
D O I：
10.4028/www.scientific.net/MSF.304-306.543
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：
The effect of GeO2, addition on the superplasticity flow and tensile ductility in TZP was examined. ZrO2-2.5mol%-Y2O3-1.0mol%GeO2 (TZP-1Ge) exhibits lower flow stress and larger tensile elongation than ZrO2 2.5mol%Y2O3 (2.5Y-TZP) in a temperature range of 1200 and 1550 degrees C. This reduction in flow stress is mainly caused by a reduction in activation energy ibr plastic flow. Cation's diffusivity must be enhanced by the presence of GeO2 in TZP. The enhanced ductility in TZP-1Ge can be explained by the reduction in flow stress.
引用
收藏
页码：543 / 548
页数：6
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