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| 硅/碳化硅材料显微特征与强度关系研究 | |
| 引用本文： | 李世斌,李养良,金志浩. 硅/碳化硅材料显微特征与强度关系研究[J]. 陶瓷学报, 2004, 25(4): 207-211 |
| 作者姓名： | 李世斌 李养良 金志浩 |
| 作者单位： | 1. 九江学院材料工程系,332005;西安交通大学金属材料强度国家重点实验室,710049 2. 九江学院材料工程系,332005 3. 西安交通大学金属材料强度国家重点实验室,710049 |
| 基金项目： | 国家“十五”863科技攻关计划资助项目(编号:2001AA333010) |
| 摘 要： | 通过改变坯体碳/碳化硅质量比,采用反应烧结方法制备了不同硅相含量和次生碳化硅分布形式的硅/碳化硅复合材料。探讨了该复合材料不同显微组织的形成机理。用三点弯曲法评价了材料强度与显微组织的关系,结合断口断裂模式,从热失配引起颗粒周围残余应力和界面能两个方面对强度-组织之间的关系进行了定性讨论。结果表明,硅/碳化硅相体积含量、碳化硅分布形态、热失配导致的残余应力是影响材料强度的主要因素,优化制备工艺参数是获得高性能材料的关键。 |
| 关 键 词： | 硅/碳化硅 显微组织 力学性能 评价 |
| 文章编号： | 1000-2278(2004)04-0207-05 |
| 修稿时间： | 2004-07-27 |
STUDY ON THE RELATIONSHIPS BETWEEN STRENGTH AND MICROSTRUCTURES IN SILICON/SILICON CARBIDE MATERIALS |
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| Li Shibin, Li Yangliang Jin Zhihao. STUDY ON THE RELATIONSHIPS BETWEEN STRENGTH AND MICROSTRUCTURES IN SILICON/SILICON CARBIDE MATERIALS[J]. Journal of Ceramics, 2004, 25(4): 207-211 | |
| Authors: | Li Shibin Li Yangliang Jin Zhihao |
| Affiliation: | Li Shibin1,2 Li Yangliang1 Jin Zhihao2 |
| Abstract: | The silicon/silicon carbide ceramic materials with different microstructures we re fabricated by changing the weight ratio of SiC to C in green bodies and react ion-bonded sintering. The relationships between bending strength and microstruct ures were evaluated by three-point bending method, and the effect of microstruct ure on the strength-controlling factors was analyzed and discussed. The study re sults indicated that the phases volume fractions, silicon carbide distribution m orphology, thermal mismatch, and microstructure uniformity were the main strengt h-controlling factors,and optimizing the preparation technology parameters was t he key to getting high performance materials. |
| Keywords: | silicon/silicon carbide microstructures mechanical properties evaluati on |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |