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使用ＭＭ—２００磨损试验机研究了石墨形态和铬含量对铸铁与石棉基摩擦材料配副时的干摩擦学性能。结果表明，蠕墨铸铁的磨损率最低；摩擦系数由高到低依次为：片墨铸铁、蠕墨铸铁、球墨铸铁。蠕墨铸铁中，随着铬含量的增加，耐磨性能明显提高，摩擦系数略有降低。在高速、高载荷条件下，铬含量的质量分数达到１．５％时，耐磨性可达普通蠕墨铸铁的４倍以上；随着载荷的增加，蠕墨铸铁的摩擦系数降低，磨损率提高。在高速条件下，摩擦系数降低的幅度比在低速条件下小。铬改善蠕墨铸铁干摩擦学性能的效果在高速使用条件下更为突出。
The tribological properties of graphite with different chromium contents on cast iron and asbestos-based friction materials were studied by MM-200 wear tester. The results show that vermicular graphite cast iron has the lowest wear rate, and the highest and lowest frictional coefficients are: ductile iron, vermicular graphite cast iron and ductile iron. Compacted graphite cast iron, with the increase of chromium content, wear resistance improved significantly, the friction coefficient decreased slightly. Under the condition of high speed and high load, when the content of chromium reaches 1.5%, the wear resistance can reach more than 4 times that of common vermicular graphite iron. With the increase of load, the friction coefficient of vermicular graphite iron decreases and the wear rate improve. Under high-speed conditions, the friction coefficient decreases less than at low speeds. The effect of chromium on the dry tribological properties of vermicular cast iron is even more pronounced at high speeds.