摘要
Carbon/carbon (C/C) composite with graphite filler addition was prepared by single-direction pressure and pyrolysis, and then a low-cost needle-punched carbon fiber reinforced carbon/silicon carbide (C/SiC) braking material was prepared by reaction melt infiltration. The tribological properties and microstructures of the composite were investigated. The results showed that the graphite mainly existed inside the short-cut webs and between the fiber bundles. The average coefficient of friction (COF) and the friction stability coefficient were rised to the maximum of 0.60, 0.78 at a brake velocity of 10 m/s. The COF curve rised smoothly and stably at high braking speed, and the wear rate as well as the friction surface temperature decreased obviously as the addition of the graphite filler. The friction film which could relieve the direct contact between the friction surfaces was easily formed on the friction surface. As a result, the tribological properties of C/SiC braking material were significantly improved.
| 源语言 | 英语 |
|---|---|
| 页（从-至） | 51-55 |
| 页数 | 5 |
| 期刊 | Hangkong Cailiao Xuebao/Journal of Aeronautical Materials |
| 卷 | 29 |
| 期 | 5 |
| 出版状态 | 已出版 - 10月 2009 |