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为了进一步提高已投入应用的合金铸铁闸瓦的制动性能以适应高速机车车辆的需要，提出了向车轮-闸瓦摩擦界面供给硬质SiC陶瓷粒子以提高制动时的摩擦系数和缩短高速制动时的制动距离的方案。研究了三种陶瓷粒子供给方式：向车轮-闸瓦间喷射陶瓷粒子；在车轮踏面上压紧陶瓷粒子块；在铸铁闸瓦铸造时埋铸圆柱状陶瓷粒子块。对上述三种方案进行了试验台制动性能试验，结果表明，在制动初速度为125km／h时，与单独使用合金铸铁闸瓦相比，制动时向摩擦界面供给SiC粒子可提高平均摩擦系数20％～30％。
In order to further improve the braking performance of the alloy cast iron brake shoe that has been put into use to meet the needs of high-speed rolling stock, it is proposed to supply hard SiC ceramic particles to the wheel-brake shoe friction interface so as to increase the friction coefficient during braking and shorten the high- Dynamic braking distance of the program. Three types of ceramic particles were studied: ceramic particles were injected into the wheel-brake shoe, ceramic particles were pressed on the wheel tread, and cylindrical ceramic particles were embedded in the cast-iron brake shoe. The braking performance test of the above three schemes was carried out. The results show that when the initial braking speed is 125km / h, the SiC particles can be supplied to the friction interface at braking to increase the average Friction coefficient 20% ~ 30%.