Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第15卷    第7期    总第76期    2005年7月

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文章编号: 1004-0609(2005)07-1040-05
不同成分对C/C-SiC材料摩擦磨损行为的影响与机理
肖 鹏, 熊 翔, 任芸芸

(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, 研究了SiC、 石墨和树脂炭成分对C/C-SiC材料摩擦磨损行为的影响及其机理。 结果表明: SiC在摩擦表面摩擦膜的形成过程中起骨架作用, 提高SiC的含量有利于提高摩擦系数, 降低磨损率; 树脂炭在材料中具有粘结各成分和提高摩擦系数的作用, 但其成膜性较差, 易增大磨损率; 石墨粉在制动过程中起润滑作用, 适量石墨粉有助于形成稳定的摩擦膜降低磨损率; 摩擦表面摩擦膜的形成有利于减少C/C-SiC材料的磨损率。

 

关键字:  C/C-SiC; 制动材料; 摩擦磨损; 摩擦机理

Effect and mechanism of different components of C/C-SiC composites on friction and wear behaviors
XIAO Peng, XIONG Xiang, REN Yun-yun

State Key Laboratory of Powder Metallurgy,
Central South University,Changsha 410083, China

Abstract: C/C-SiC composites were fabricated by warm compacted-in situ reacted process, and the effect and mechanism of SiC, graphite and resin carbon on friction and wear behaviors of C/C-SiC composites were investigated. The results indicate that, SiC acts as a framework in the course of forming friction film on the surface of a sample, and SiC is propitious to improve friction coefficient and lighten wear. Resin carbon makes all components compacted and enhances the friction coefficient, but with resin carbon increasing the wear is prone to increase. Graphite is a lubricant and its moderate content helps to forming friction film and to decrease wear. In the course of braking, to form film on the frictionizing surface of C/C-SiC composites is in favor of decreasing wear.

 

Key words: C/C-SiC; brake materials; friction and wear; friction mechanism

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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