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| Development of high energy and high power density wet Cu-based friction material |
| Lü Bo，WANG Sanquan，LIN Haosheng，ZHOU Juying |
| （Huangshi Saife Friction Material Co., LTD. , Huangshi 435000, China） |
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Abstract The friction and wear properties of wet Cu-based friction material could be improved by the develop‐
ment of a wet Cu-based powder metallurgy friction material of high-energy and high-power density, which is, af‐
ter composition designing and process optimization, manufactured by the powder metallurgy technique, with the
addition of alloy elements such as Sn, Zn, Ni and Ti as the alloy components, flake graphite and artificial graph‐
ite of different particle morphologies and particle sizes as the lubricating components, and ZrO2 as the friction
components. The result shows that the friction coefficient, stability, hardness of Cu-based friction material could
be improved significantly with addition of Sn, Zn, Ni, Ti and other multicomponent alloy elements in the matrix.
The stability of friction coefficient at high speed is strengthened obviously with the addition of ZrO2, the heat re‐
sistance is evidently reinforced with the addition of a large proportion of flake graphite and artificial graphite.
Such additions and process optimization can effectively raise the energy absorption and power level of friction
materials, the allowable value of energy load increases by 30%, the friction coefficient is high and stable, and the
wear rate is significantly lowered.
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Received: 13 July 2022
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2022, Vol. 32 
