Preparation of Ce-ZrO2 Based Composites and Effect of Addition of 3Y-ZrO2 on Their Microstructures |
| Journal |
Key Engineering Materials (Volumes 317 - 318) |
| Volume |
The Science of Engineering Ceramics III |
| Edited by |
T. Ohji, T. Sekino and K. Niihara |
| Pages |
41-44 |
| DOI |
10.4028/www.scientific.net/KEM.317-318.41 |
| Online since |
August, 2006 |
| Authors |
Atsushi Nakahira,
Mitsuhiko Ohta,
T. Murakami,
T. Kudo
|
| Keywords |
CeO2-ZrO2, Strength, Toughness, Transformation, Y2O3-ZrO2, ZrO2-Based Composites |
| Abstract |
12 mol%CeO2 based composites were fabricated by a pressureless sintering technique and post-HIP
treatments. The mixture of 12CeO2-ZrO2/3Y2O3-ZrO2 (= 80 wt%/20 wt%) powders from various methods were
prepared by a ball milling technique and consequently sintered at 1400 in air atmosphere and post-HIP treatment
at 1350. The 12Ce-ZrO2/Y-ZrO2 composites sintered from mixture of 12CeO2-ZrO2 powder and 3Y2O3-ZrO2
powders possessed the high strength over 1300 MPa and also high fracture toughness over 11 MPam1/2. Furthermore,
the significant inhibition of the ZrO2 phase transformation of tetragonal to monoclinic phase under an aqueous
hydrothermal condition at 150 was obtained for these 12Ce-ZrO2/Y-ZrO2 composites prepared from this method.
Microstructural observation was in detail performed by TEM and EDS. |
| Full Paper |
Get the full paper by clicking here
|
| Preview |
Free first page example |
