| Mechanical Properties of ZrO2 Ceramic Stabilized by Y2O3 and CeO2 |
| |
| 作者姓名： | 余明清 FANShi-gang ZHANGLian-meng SUNShu-zhen |
| |
| 作者单位： | [1]ResearchInstituteofSyntheticCrystals [2]WuhanUniversityofTechnology |
| |
| 摘 要： | ZrO2 ceramic was made from evenly dispersed ( Y, Ce )-ZrO2 powder with different composi-tions, which was prepared by the chemical coprecipitation, and stabilized by compound additions through appropri-ate techniques. And its mechanical property that is related to the phase content and its microstntcatre was studied by X-ray diffraction(XRD),scan electron microscope(SEM). The results show that Y2O3 has stronger inhibition to the growth of ZrO2 crystal than CeO2 has. TheFEfore, within an appropriate composition range of Y2O3 and CeO2, the higher the content of Y2O3, the lower the content of CeO2, the smaller ZrO2 crystal. Combining this feature and the stabilization technique with complex additions instead of simple addition, ZrO2 ceramic with high density and excellent mechanical properties can be made under normal conditions. It is concluded that the improvement of mecMnical properties originates from the toughening of microcrack, phase transformation and the effect of grain e-vulsions.
|
| 关 键 词： | 机械性能 ZrO2陶瓷材料 Y2O3 CeO2 二氧化锆 二氧化铈 三氧化二钇 |
| 收稿时间： | 21 August 2001 |
Mechanical properties of ZrO2 ceramic stabilized by Y2O3 and CeO2 |
| |
| Yu Ming-qing,Fan Shi-gang,Zhang Lian-meng,Sun Shu-zhen.Mechanical Properties of ZrO2 Ceramic Stabilized by Y2O3 and CeO2[J].Journal of Wuhan University of Technology. Materials Science Edition,2002,17(2):14-18. |
| |
| Authors: | Yu Ming-qing Fan Shi-gang Zhang Lian-meng Sun Shu-zhen |
| |
| Affiliation: | (1) Wuhan University of Technology, Wuhan, China;(2) Research Institute of Synthetic Crystals, 100018 Beijing, China |
| |
| Abstract: | ZrO2 ceramic was made from evenly dispersed (Y, Ce)-ZrO2 powder with different compositions, which was prepared by the chemical coprecipitation, and stabilized by compound additions
through appropriate techniques. And its mechanical property that is related to the phase content and its microstructure was
studied by X-ray diffraction (XRD), scan electron microscope (SEM). The results show that Y2O3 has stronger inhibition to the growth of ZrO2 crystal than CeO2 has. Therefore, within an appropriate composition range of Y2O3 and CeO2, the higher the content of Y2O3, the lower the content of CeO2, the smaller ZrO2 crystal. Combining this feature and the stabilization technique with complex additions instead of simple addition, ZrO2 ceramic with high density and excellent mechanical properties can be made under normal conditions. It is concluded that the
improvement of mechanical properties originates from the toughening of microcrack, phase transformation and the effect of
grain evulsions.
Yu Ming-qing : Born in 1963 |
| |
| Keywords: | mechanical properties compound additions stabilization technique |
| 本文献已被 维普 万方数据 SpringerLink 等数据库收录！ |
|
