首页> 中文期刊> 《粉末冶金材料科学与工程》 >Cr-Fe为摩擦组元的铜基粉末冶金摩擦材料的摩擦磨损性能

Cr-Fe为摩擦组元的铜基粉末冶金摩擦材料的摩擦磨损性能

         

摘要

Cr-Fe powder was used as hard phase to replace the ceramic phase in traditional materials, Cu-based powder metallurgy friction materials were prepared. The microstructure was analyzed by SEM, the friction and wear properties were tested on the machine of MM3000 and compared with the copper-based powder metallurgy friction material in which Al2O3 as friction component. The results show that Cr-Fe replacing ceramic phase can improve the bonding of interface between the hard phase and the copper matrix in the Copper-based friction materials. The friction coefficient decreases and then increases with increasing friction speed. Compared with the materials using Al2O3 as friction component, the friction coefficient of materials using Cr-Fe as the friction component increases by 12%~27%, the stability increases by 10%~20%, and the wear volume loss decreases by 20%~70%.%以 Cr-Fe 取代传统材料中的陶瓷相作为硬质相(即摩擦组元),制备铜基粉末冶金摩擦材料,通过扫描电镜观察分析该材料的微观结构,在MM3000摩擦磨损试验机上检测材料的摩擦磨损性能,并与以Al2O3作为摩擦组元的铜基粉末冶金摩擦材料进行对比。结果表明,以Cr-Fe取代陶瓷相作为摩擦组元,可改善硬质相与基体间的结合状态。随摩擦速度提高,材料的摩擦因数呈先下降后上升的趋势;与Al2O3陶瓷相作为摩擦组元相比,用Cr-Fe 为摩擦组元的铜基粉末冶金摩擦材料的摩擦因数提高12%~27%,且稳定性提高10%~20%,线磨损量降低20%~70%。

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