| Sm2Zr2O7-ZrB2/SiC复合材料的制备及力学性能研究 |
| |
| 引用本文： | 严振宇,徐强,朱时珍,刘颖.Sm2Zr2O7-ZrB2/SiC复合材料的制备及力学性能研究[J].稀有金属材料与工程,2011(Z1):623-626. |
| |
| 作者姓名： | 严振宇 徐强 朱时珍 刘颖 |
| |
| 作者单位： | 北京理工大学 |
| |
| 基金项目： | 国家自然科学基金(50702008) |
| |
| 摘 要： | 运用共沉淀法制备Sm2Zr2O7原料粉末,利用放电等离子烧结技术(SPS)制备锆酸钐质量分数分别为25%、50%、75%的Sm2Zr2O7-ZrB2/SiC复合材料,对材料进行相成分、微观形貌、力学性能测试表征。结果表明,采用SPS在1600℃下可制备出高致密度的Sm2Zr2O7-ZrB2/SiC三相复合材料。随着复合材料中Sm2Zr2O7含量的增加力学性能显著降低,主要是Sm2Zr2O7材料本身的力学性能较低,且烧结过程中易形成连续相以及烧结应力共同作用的结果。
|
| 关 键 词： | Sm2Zr2O7 ZrB2/SiC 放电等离子烧结 力学性能 |
Synthesis and Mechanical Properties of Sm2Zr2O7-ZrB2/SiC Composites |
| |
| Yan Zheyu, Xu Qiang, Zhu Shizhen, Liu Ying.Synthesis and Mechanical Properties of Sm2Zr2O7-ZrB2/SiC Composites[J].Rare Metal Materials and Engineering,2011(Z1):623-626. |
| |
| Authors: | Yan Zheyu Xu Qiang Zhu Shizhen Liu Ying |
| |
| Affiliation: | (Beijing Institute of Technology, Beijing 100081, China) |
| |
| Abstract: | The Sm2Zr2O7-ZrB2/SiC composites with different Sm2Zr2O7 content were synthesized by spark plasma sintering process. The density, phase composition, microstructures and mechanical properties such as strength and fracture toughness were tested. The results reveal that the dense and pure three-phase composite can be prepared at 1600 ℃ by SPS. The mechanical properties are decreased with the increasing content of Sm2Zr2O7, which are caused collaboratively by the poor mechanical properties of Sm2Zr2O7, special microstructure and residual stress during sintering process. |
| |
| Keywords: | Sm2Zr2O7 ZrB2/SiC SPS mechanical properties |
| 本文献已被 CNKI 等数据库收录！ |
