高速列车铁基烧结闸片材料的摩擦磨损性能研究

采用粉末冶金工艺，通过对材料组成和工艺等的实验研究，获得了一种铁基烧结闸片材料，对材料的物理机械性能、摩擦磨损性能和微观组织结构等进行了分析测试，探讨了烧结摩擦材料的摩擦磨损机理以及材料微观组织结构与摩擦磨损性能之间的关系。结果表明：该材料摩擦系数较高（0．31），磨损率低（0．022mm/次），摩擦稳定性优良；同时具有良好的物理机械性能，是一种潜在的高速列车制动闸片材料。烧结摩擦材料的摩擦机理归于啮合和粘着，而磨损机理归于磨粒磨损和疲劳裂纹萌生及扩展。

Friction and Wear Behavior of Fe-based Sintered Lining Material for Highway Train

Iron based braking material for highway train was developed based on the experimental research on components and powder metallurgy technology. The physical mechanical and friction and wear properties of the material were investigated with emphasis on the variations of the friction and wear behavior with the compositions and testing conditions. The friction and wear mechanism and the relationship between the microstructure and friction and wear properties of the braking material were also discussed. The results show that the braking material records a friction coefficient 0.31, wear rate 0.0022 mm/cycle, friction stability 88.9%, and good mechanical properties as well. The optimized comprehensive properties of the braking material can be reached by proper formulation.