| SiC微粉含量对先驱体转化制备碳纤维布增强碳化硅复合材料性能的影响 |
| |
| 引用本文： | 简科,陈国民,陈朝辉,马青松.SiC微粉含量对先驱体转化制备碳纤维布增强碳化硅复合材料性能的影响[J].材料工程,2003(12):23-25,32. |
| |
| 作者姓名： | 简科 陈国民 陈朝辉 马青松 |
| |
| 作者单位： | 1. 国防科技大学新型陶瓷纤维及复合材料国防科技重点实验室,湖南,长沙,410073
2. 湖南城市学院,湖南,益阳,413001 |
| |
| 摘 要： | 以聚碳硅烷(PCS)、二乙烯基苯(DVB)和SiC微粉为原料制备了碳纤维布增强碳化硅复合材料，考察了SiC微粉含量对材料结构与性能的影响。实验表明，SiC微粉含量过低，材料内部存在大的孔洞，容易造成应力集中，导致材料的力学性能较差；而当SiC微粉含量较高时，在制备过程中微粉对碳纤维机械损伤加大，同样导致材料力学性能下降。当SiC微粉含量为30％(质量分数)时，所制备的材料的力学性能较好，其弯曲强度和拉伸强度分别为246．4MPa和72．5MPa。
|
| 关 键 词： | SiC微粉 碳纤维布增强碳化硅 先驱体 弯曲强度 拉伸强度 Cf／SiC复合材料 |
| 文章编号： | 1001-4381(2003)12-0023-03 |
Effect of SiC Powder Content on the Mechanical Properties of Carbon Fiber Cloth Reinforced SiC Composites Fabricated via Precursor Pyrolysis |
| |
| JIAN Ke,CHEN Guo-min,CHEN Zhao-hui,MA Qing-song.Effect of SiC Powder Content on the Mechanical Properties of Carbon Fiber Cloth Reinforced SiC Composites Fabricated via Precursor Pyrolysis[J].Journal of Materials Engineering,2003(12):23-25,32. |
| |
| Authors: | JIAN Ke CHEN Guo-min CHEN Zhao-hui MA Qing-song |
| |
| Affiliation: | JIAN Ke~1,CHEN Guo-min~2,CHEN Zhao-hui~1,MA Qing-song~1 |
| |
| Abstract: | Carbon fiber cloth reinforced silicon carbide(C_f /SiC) composites were fabricated with polycarbosilane(PCS) and divinylbenzene (DVB) as precursors and SiC as inert fillers. The effects of SiC powder(SiC_p) content on the structure and properties of C_f/SiC composites were investigated. The results show that the mechanical properties of the cloth fabricated with lesser SiC_p content were low because big pores existed in the composites which led to stress concentration. But when the content was excessive, SiC_p would hurt the carbon fiber seriously. As a result, the properties of the composites decreased. It was found that when fabricated with 30% SiC_p (mass fraction) the composites exhibited highest properties, and the flexural strength and tensile strength reached 246.4MPa and 72.5MPa, respectively. |
| |
| Keywords: | SiC powder carbon fiber cloth reinforced SiC composites precursor flexural strength tensile strength |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
