在普通铸铁闸瓦中添加合金元素如Ni、Mo等,有利于提高高速条件下的摩擦因数及耐磨性。但Ni、Mo等稀有金属价格较高,要求削减其用量。文章介绍了将削减了Ni及Mo用量的合金铸铁闸瓦改进为与陶瓷泡沫体的复合结构,以弥补其制动性能的降低以及进一步提高耐磨性的方法和研究成果。 The addition of alloying elements such as Ni and Mo to common cast iron brake shoes is beneficial to improve the friction coefficient and wear resistance under high speed conditions. However, higher prices of rare metals such as Ni and Mo require the reduction of their consumption. The article introduces the method and research results of improving the composite structure of the ceramic cast iron brake shoes with the reduction of Ni and Mo dosage to the ceramic foam body to make up for the reduction of braking performance and further improvement of the wear resistance.