(中南大学 粉末冶金国家重点实验室，长沙 410083)
摘 要: 采用温压−原位反应法制备C/C-SiC复合材料，利用QDM150型摩擦试验机研究短炭纤维(SCF)长度和纤维体积分数对C/C-SiC制动材料摩擦磨损性能的影响。结果表明：C/C-SiC制动材料能够保持较高且稳定的摩擦因数；SCF的体积分数将影响C/C-SiC制动材料的摩擦磨损性能，纤维体积分数为10％时，材料具有适中的摩擦因数和较低的磨损率；SCF长度对C/C-SiC制动材料的摩擦磨损性能有显著影响，炭纤维长度为12 mm时，材料具有最佳的摩擦磨损性能。
关键字: 短炭纤维；C/C-SiC复合材料；摩擦磨损
（State Key Laboratory of Powder Metallurgy, Central South University,Changsha 410083, China）
Abstract:C/C-SiC composites were manufactured by warm compacted−in suit reacted process. The influence of short carbon fiber length and content on the friction and wear behaviors of C/C-SiC composites was investigated using QDM−150 wear tester. The results show that C/C-SiC composites can keep high and stable friction coefficient. The friction and wear behaviors of C/C-SiC composites are affected by carbon fiber content. When the volume fraction of fiber is 10%, the material has moderate friction coefficient and lower wear rate. The length of carbon fibers significantly influences the friction and wear behaviors of C/C-SiC composites. When the length of carbon fiber is 12 mm, the material has the best friction and wear properties.
Key words: short carbon fiber; C/C-SiC composite; friction and wear
