采用自制均匀分散的(1.5Y,4Ce)-ZrO2微粉,通过适当工艺和92Al2O3复合,提高了92Al2O3陶瓷的韧性和强度.最后采用X-射线衍射分析、扫描电镜分析研究了该样品的机械性能与烧成制度、相组成及微观结构的关系.结果表明:92Al2O3陶瓷性能的提高归因于ZrO2的应力诱导相变增韧,并且当(1.5Y,4Ce)-ZrO2微粉的加入量为20%(质量分数)时,试样在1550℃烧成时,材料的抗弯强度、断裂韧性以及硬度得到了很好的改善.
参考文献
| [1] | Trablesi R;Treheux D;Fantozzi G et al.Relationship between mechanical properties and wear resistance of alumina-zirconia ceramic composites[J].Tribology Transactions,1989,32:77-84. |
| [2] | Tsai Jingfang;Cong U .Transformation plasticity and toughening in CeO2-partinlly-stabilized zirconia-aluminaCe-TZP/A12O3composites doped with MnO[J].Journal of the American Ceramic,1992,75(05):1229-1238. |
| [3] | Hem C;Wang Y S;Wallace J S et al.Effect of microstructure on the wear transition of zirconia-toughened alumina[J].Wear,1993,162-164:314-321. |
| [4] | YU Ming-qing,FAN Shi-gang,ZHANG Lian-meng,SUN Shu-zhen.Mechanical Properties of ZrO2 Ceramic Stabilized by Y2O3 and CeO2[J].武汉理工大学学报(材料科学版)英,2002(02):14-18. |
| [5] | 葛启录;周玉;雷延权 等.ZrO2-2mol%Y2O3陶瓷显微结构及性能的研究[J].硅酸盐学报,1990,18(01):47-53. |
| [6] | Bowen B P.Micromechanisms of toughening in a particulate reinforced ceramic matrix composite[J].Ceramic Engineering and Science Proceedings,1992(5-6):99-114. |
| [7] | Evans A G;Heuer A H .Review:Transformation toughening in ceramics-martensitic transformation in crack-tip stress field[J].Journal of the American Ceramic Society,1984,63(5-6):314-327. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%