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一、概况粉末冶金摩擦材料由于它与对偶材料的摩擦系数大、摩擦性能稳定,耐磨性高并具有抗咬合能力、导热性能好等特点,已日益广泛地运用在民用、国防等各个方面。如船用齿轮箱上的离合器片、拖拉机、汽车、飞机的刹车片等。随着大型机器、运输设备向重载、高负荷方向发展,目前,摩擦材料承受的压力不象以前那样比压只有10～20公斤/厘米~2,摩擦力矩也小,而是比压为220公斤/厘米~2以上,有的传递的扭矩(一对摩擦付)达120公斤一米。在这样大的载荷作用下,摩擦材料本身的多种组元的各自作用和相互影响,使摩擦付的
I. Overview Powder metallurgy friction material because of its friction coefficient with the dual material, friction and stability, high wear resistance and anti-bite ability, good thermal conductivity and other characteristics, has been increasingly widely used in civil, defense and other aspects. Such as marine gear box on the clutch, tractors, cars, aircraft brakes and so on. With large machines, transport equipment to heavy load, high load direction, at present, the friction material under pressure than the previous pressure is only 10 to 20 kg / cm ~ 2, the friction torque is small, but the pressure is 220 Kg / cm ~ 2 or more, and some of the transmitted torque (a pair of friction) up to 120 kg a meter. Under the action of such a large load, the respective roles and interactions of the various components of the friction material itself make friction-dependent