Tribological performance of B4C modified C/C-SiC brake materials under dry air and wet conditions |
| |
| Affiliation: | 1. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi''an, Shaanxi 710072, PR China;2. Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi''an, Shaanxi 710072, PR China;3. School of Materials Science and Engineering, Chang''an University, Xi''an, Shaanxi 710064, PR China;1. Key Laboratory of Advanced Ceramics and Machining Technology, Ministry of Education, Tianjin University, Tianjin, China;2. Key Laboratory of Advanced Functional Composites, CASC, Beijing, China;1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, PR China;2. Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA;1. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, PR China;2. Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, PR China;3. Department of Materials Science, Glass and Ceramics, University of Erlangen-Nuremberg, Martensstr. 5, 91058 Erlangen, Germany |
| |
| Abstract: | In this work, boron carbide (B4C) was selected as additive to improve the tribological performance of C/C-SiC brake materials. It contained four phases (C, B4C, Si and SiC) in B4C modified C/C-SiC (C/C-B4C-SiC) brake materials. Its wear rates were much less than that of C/C-SiC, especially at high braking speeds. The introduction of B4C particles could reduce the braking temperature. During the braking process, B4C in the material can be oxidized to B2O3. The flow of B2O3 could cover the interface of carbon fiber and PyC to prevent them from oxidation and thereby reduce the oxidative wear of the brake materials. Under wet conditions, the braking property of C/C-B4C-SiC brake materials did not degrade, whereas the braking process was found to be stable. |
| |
| Keywords: | C/C-SiC Friction Wear |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
