Study on preparation and performance of copper-based brake friction plate
SUN Haiying1，GAO Wenqiang1，CHEN Hua2，LI Jing1，PAN Yuan′an1
（1. Changchun Automobile Industry Institute, Changchun 130013, China; 2. College of Material Science and En‐
gineering, Changchun University Of Technology, Changchun 130000, China）
Abstract：In this paper, the copper-based brake friction plate is manufactured by powder metallurgy technology.
The main components are Cu, Fe and graphite. The morphology of sintered and worn microstructure was ana‐
lyzed by scanning electron microscope, the phase structure of the samples was analyzed by X-ray diffractometer,
and the friction and wear properties of the samples were tested by MM-W1B vertical universal friction and wear
testing machine. The results show that the average density of copper brake material is 5.83 g/cm3, the porosity is
24.6%, the compressive strength is 108 MPa, and the average hardness is 84 HV, which meet the requirements of
brake friction plate. Under dry friction conditions, the friction coefficient can reach 0.31-0.45 when the rotation
speed ranges from 200 r/min to 600 r/min, and the main wear mechanisms are abrasive wear and oxidation wear.
Under the condition of lubricating friction, the higher the temperature, the greater the friction coefficient, the
friction coefficient is less affected by rotational speed.
2023, Vol. 33 
