| TiB2／SiCw复合材料增韧机理的微观分析 |
| |
| 引用本文： | 邓建新 艾兴. TiB2／SiCw复合材料增韧机理的微观分析[J]. 陶瓷学报, 1996, 17(3): 4-7 |
| |
| 作者姓名： | 邓建新 艾兴 |
| |
| 作者单位： | 山东工业大学 |
| |
| 摘 要： | 在ＴｉＢ２／ＳｉＣｗ基体中加入适量的ＳｉＣｗ可以明显地提高其断裂韧 性ＫＩＣ，其它机械性能也有不同程度的改善。ＳＥＭ、ＴＥＭ微观分析表明：在具有较高ＫＩＣ值的ＴｉＢ２／ＢｉＣｗ陶瓷复合材料中，ＳｉＣｗ与ＴｉＢ２晶粒之间有较适宜的界面结合，两相之间未发现有明显的界面化学反应用，当该复合材料发生断裂时，其内部出现晶须拔出，裂纹桥连，裂纹偏转三种增韧机制。
|
| 关 键 词： | 硼化钛 碳化硅 晶须 陶瓷材料 增韧 复合陶瓷 |
MICROSCOPIC ANALYSIS FOR TOUGHENING MECHANISMS IN TiB_2/SiC_w COMPOSITES |
| |
| Deng Jianxin,Ai Xing. MICROSCOPIC ANALYSIS FOR TOUGHENING MECHANISMS IN TiB_2/SiC_w COMPOSITES[J]. Journal of Ceramics, 1996, 17(3): 4-7 |
| |
| Authors: | Deng Jianxin Ai Xing |
| |
| Affiliation: | Shandong University of Technology |
| |
| Abstract: | TiB2/SiCw ceramic composites with different SiCw content were fabricated by hot pressing technique. Substantial improvements in fracture toughness and fie-cural strength was obtained for the composite compared with the pure TiB2 ceramic. Microscopic analysis by SEM, TEM showed that whisker pullout, bridging and crack deflection simultaneously occurred in the composites while broken. So its toughening mechanisms is the complex one consisting of the three mechanisms. |
| |
| Keywords: | TiB_2 SiC whisker ceramic composite toughening mechanism microscopic analysis |
| 本文献已被 CNKI 维普 等数据库收录！ |
