Fe_3Al基摩擦材料的结构与摩擦磨损性能  

Microstructure and Tribology Properties ofFe_3Al Base Friction Material

作　　者：李静[1] 尹衍升 马洪涛[1] 

机构地区：[1]山东大学材料液态结构与遗传性教育部重点实验室工程陶瓷山东省重点实验室,济南250061

出　　处：《材料工程》2004年第8期3-6,11,共5页Journal of Materials Engineering

基　　金：教育部博士点基金资助项目 ( 2 0 0 2 0 42 2 0 0 1) ;山东省重点基金资助项目 ( Z2 0 0 2 F0 2 )

摘　　要：采用热压烧结方法制备了一种适用于重载高速工况下的新型 Fe3Al金属间化合物基摩擦材料 ,并对其微观结构、力学性能以及干滑动摩擦磨损性能进行了试验研究。结果表明 ,Fe3Al金属间化合物基摩擦材料密度低 ,强度高 ,摩擦系数高而稳定 ,高温耐磨性好。不同条件下摩擦磨损机制不同 ,轻载荷下主要是磨粒磨损和疲劳磨损 ,表现为微犁沟和凹坑 ;重载荷下摩擦初中期表现为严重塑性变形、裂纹扩展和疲劳断裂 。A new kind of Fe3Al intermetallic base friction material was prepared by hot pressing. The microstrucure, mechanical properties and dry sliding friction and wear properties of this material were studied. The results show that the Fe3Al intermetallic based friction material has low density, high strength, high and smooth friction coefficient, and excellent wear resistance at high temperature. There are different wear mechanisms at different conditions. Under light loads the main wear mechanisms include abrasive wear and fatigue wear, which are characterized with microploughing and concavities. Under heavy loads the wear mechanisms include serious plastic deformation, crack propagation and fatigue fracture at the former stage of the friction, and oxidation wear at the later stage.

关 键 词：FE3AL 金属间化合物 微观结构 摩擦磨损 

分 类 号：TB174.442[生物学—生物工程]