摘要
对树脂补增密前、后的C/C复合材料(简称材料A和材料B)在不同制动压力下的摩擦磨损性能进行了研究。通过光学显微镜和扫描电镜对C/C复合材料的摩擦表面和磨屑进行了观察和分析。结果表明,随着制动压力的增大,C/C复合材料摩擦表面的摩擦膜变得更加致密完整,而质量磨损和线性磨损均呈现出先增加、后略降低,而后再增加的一种趋势;树脂补增密后,C/C复合材料(材料B)表现出了更好的摩擦磨损性能,其制动曲线为理想的"马鞍"型。虽然补增密后材料B的摩擦系数比补增密前材料A的要小,但在相同制动压力下,材料B的制动时间不仅明显比材料A的要短,而且其磨损率也明显比材料A的也要小。
The friction and wear properties of carbon/carbon composites without and with resin post-densification（ for short,materials A and B） were investigated under different braking pressure on the MM-1000 friction tester.The friction surface and wear debris of C/C composites were observed and analyzed by optical and scanning electron microscopes. The results show that the friction film on the friction surface of carbon/carbon composites becomes more compact and complete with the increase of brake pressure.The mass wear rate and linear wear rate of materials A and B increase first,and then decrease slightly,followed by a further increase.The material B shows better friction and wearing properties than A,and its brake curve is an ideal ＂saddle＂type. Although the friction coefficient of material B is smaller than that of material A,the braking time of material B is obviously shorter than that of material A at the same brake pressure.The wear rate of the material B is obviously smaller than that of the material A.
作者
郭晨
孙润军
王剑锋
GUO Chen;SUN Runjun;WANG Jianfen(College of Textile Science and Engineering,Xi＇ an Polytechnic University,Xi＇ an 710048,China;School of Materials,Northwestern Polytechnical University,Xi＇ an 710072,China)
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2018年第4期514-519,共6页
Journal of Solid Rocket Technology
基金
国家自然科学基金(51521061)
关键词
C/C复合材料
树脂补增密
摩擦磨损性能
制动压力
carbon/carbon composites
resin post-densification
fiction and wear property
braking pressure
