Abstract: Four iron-based braking materials are developed via powder metallurgy technology based on experiments to components and technology parameter. Mechanical property and friction and wear property are tested. The material which is prospected to use for high-speed train is obtained with the well mechanical property and the property of friction coefficient of 0.31, wear rate of 2.2 μm once and friction stability of 88.9%. The microstructure is observed and the relationship between the property and microstructure is discussed. Three key factors influencing on tribologic characteristics of braking lining are put forward.

Key words: Friction and wear property, High-speed train, Microstructure, Powder metallurgy braking materials