| Mechanical Properties of ZrO_2 Ceramic Stabilized by Y_2O_3 and CeO_2 |
| |
| 作者姓名： | 余明清 |
| |
| 摘 要： | 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 microstructwe 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 Y2 O3 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 e-vulsions.
|
Mechanical Properties of ZrO_2 Ceramic Stabilized by Y_2O_3 and CeO_2 |
| |
| YU Ming-qing FAN Shi-gang ZHANG Lian-meng SUN Shu-zhenResearch Institute of Synthetic Crystals,Wuhan University of Technology.Mechanical Properties of ZrO_2 Ceramic Stabilized by Y_2O_3 and CeO_2[J].Journal of Wuhan University of Technology. Materials Science Edition,2002(2). |
| |
| Authors: | YU Ming-qing FAN Shi-gang ZHANG Lian-meng SUN Shu-zhenResearch Institute of Synthetic Crystals Wuhan University of Technology |
| |
| Affiliation: | YU Ming-qing FAN Shi-gang ZHANG Lian-meng SUN Shu-zhen1)Research Institute of Synthetic Crystals 2) Wuhan University of Technology |
| |
| 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 microstructwe 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 Y2 O3 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 e-vulsions. |
| |
| Keywords: | mechanical properties compound additions stabilization technique |
| 本文献已被 CNKI 等数据库收录！ |
|
