C/C-SiC陶瓷基复合材料刹车副摩擦性能研究  

Friction and Wear Properties of Brake Pairs of C/C-SiC Ceramic Composites

作　　者：谢乔[1] 朱冬梅[1] 王晓艳[1] 罗发[1] 周万城[1] 

机构地区：[1]西北工业大学凝固技术国家重点实验室,陕西西安710072

出　　处：《稀有金属材料与工程》2007年第A01期655-658,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金项目(90305016)

摘　　要：以不同孔隙率的C/C复合材料为预制体,以甲基三氯硅烷(CH3SiCl3)为反应源气,以氩气为载气,高纯氢气为稀释气体,用化学气相渗透法(CVI)制备一系列C/C-SiC复合材料。通过在MM-2000摩擦磨损实验机上的摩擦试验,对该系列材料的摩擦磨损性能进行了研究,详细分析了不同压力和摩擦环境(湿态和干态)对材料摩擦性能的影响。结果表明,在外界条件相同的情况下,随着压力的增大,材料的摩擦系数先增大后降低;随着SiC含量增加,材料摩擦磨损性能先增强后下降,SiC含量在40%左右具有最好的摩擦磨损性能。在湿态环境下材料的平均动摩擦性能明显衰退,但是当压力增大时这种衰退的影响减小。A series of C/C-SiC composites have been produced by chemical vapor infiltration method （CVI） using CH3SiC13 as reaction gas, argon as carrier gas and hydrogen as dilution gas. The friction and wear properties of materials have been studied by friction test at the MM-2000 friction and wear equipment. The effect of different pressure and friction environment （dry and damp environment） on friction and wear properties was analyzed in detail. The result shows that, with increasing of the pressure, friction coefficient is increased firstly, but then falls; with increasing of the content of SiC, the friction and wear properties of materials are increased initially, but decrease later. When the content of SiC is 40% the materials have the best friction and wear properties. The damp environment results in low friction properties, but the braking pressure will weaken the effect.

关 键 词：C/C-SIC复合材料 摩擦磨损 干态 湿态 

分 类 号：TB332[一般工业技术—材料科学与工程]