铜基粉末冶金摩擦材料增强相的研究发展状况

Research and development of reinforced phases in copper based powder metallurgical friction materials

铜基粉末冶金摩擦材料具有组织均匀、导热性好、耐磨性高、摩擦因数稳定等优点,应用于快速列车的制动摩擦领域。目前,国内的铜基粉末冶金刹车片已基本满足250 Km/h列车的需求,但300 Km/h以上的高速列车刹车片还是依靠进口。本文综述了金属粉末、金属化合物以及陶瓷颗粒等增强相对铜基粉末冶金摩擦磨损性能的影响,指出了高速列车用铜基粉末冶金摩擦材料制备过程中存在的主要问题,并展望了铜基粉末冶金摩擦材料的发展前景。

Copper-based powder metallurgy friction materials have been gradually applied to fast train brake friction materials for its homogeneous,good thermal conductivity,high abrasion resistance,friction factor stability,etc.At present,the domestic copper-based P/M brake pads have basically met the demand of 250 Km/h trains,but the brake pads of high-speed trains above 300 Km/h still rely on imports.In this paper,the effects of metal powders,metal compounds and ceramic particles on the friction and wear properties of copper-based powder metallurgy are reviewed.The main problems in the preparation of copper-based powder metallurgy friction materials for high-speed trains are pointed out,and the development prospect of copper-based powder metallurgy friction materials is prospected.