一、前言铸铁气缸套的耐磨性主要取决于铸铁的金相组织。磷共晶、含硼碳化物、碳氮化物或合金碳化物都是气缸套中耐磨的硬质相。这些硬质相由于类型、显微硬度、分布、数量及其块度大小的不同,就造成了气缸套材质上耐磨性的差异。磷共晶和含硼碳化物已在文献中作过专门的介绍。因此,本文对它就不再作进一步叙述。本文作者通过硼钨铬多元合金铸铁、钒钛铸铁、铌铸铁三种不同材质气缸套中合金碳化物相的扫描电镜分析,对照这三种气缸套与国内广泛使用的高磷合金铸铁、硼铸铁气缸套,在同一条件下的快速磨损对比试验。提出了影 First, the foreword Wear resistance of cast iron cylinder liner mainly depends on the microstructure of cast iron. Phosphorus eutectic, boron-containing carbides, carbonitrides or alloy carbides are hard-wearing hard phases in the cylinder liner. Due to the type, microhardness, distribution, quantity and size of these hard phases, these hard phases cause differences in material wear resistance of the cylinder liner. Phosphorus eutectic and boron carbide has been made in the literature specifically introduced. Therefore, this article will not be further narrated. Through the scanning electron microscopy analysis of the alloy carbide phases in three kinds of cylinder liner made of boron-tungsten-chromium multiple alloy cast iron, vanadium-titanium cast iron and niobium cast iron, the author compares the three cylinder liners with the widely used high phosphorus alloy cast iron, boron cast iron Cylinder liner, under the same conditions of rapid wear comparison test. Proposed a shadow