| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1460090 | Ceramics International | 2015 | 7 Pages |
Abstract
Y2O3 stabilized HfO2 ceramics with 5 mol% and 8 mol% Y2O3, respectively, were successfully fabricated by pressureless sintering at 1600 °C for 1 h. The phase distribution and transformation, microstructure, and relative density were investigated for Y2O3 stabilized HfO2 ceramics. Cubic phase was observed in the Y2O3 stabilized hafnium dioxide while pure HfO2 showed monoclinical phase only. The SEM images of fractured surface indicated two kinds of structures existed in modified HfO2, the solid solution region and uniform polygon grains, and some holes caused by Kirkendall effect. Refractoriness test showed that high temperature volumetric stability of the material can be effectively enhanced by adding Y2O3 into HfO2.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Jiaxing Zhao, Yujun Zhang, Hongyu Gong, Yubai Zhang, Xianli Wang, Xue Guo, Yujun Zhao,