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用获得珠光体类含磷灰铸铁的方法可以解决寻求制动闸瓦新型摩擦材料的问题。这种珠光体含磷灰铸铁应有最佳的石墨形状和数量，相当高的摩擦系数，但有较低的热循环强度和较小的在工作表面形成裂纹的倾向。解决寻求新型闸瓦摩擦材料的另一途径是制取硅含量≤１．２５％的变性铸
The method of obtaining pearlite type phosphorous-containing gray cast iron can solve the problem of seeking new friction material of brake shoe. This pearlite phosphorous-containing gray cast iron should have the best graphite shape and number, a relatively high coefficient of friction, but lower thermal cycle strength and less tendency to crack at the working surface. Another way to solve the problem of finding a new brake shoe friction material is to make a modified cast steel with a silicon content of ≤1.25%