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| Tribological properties of nano-particles reinforced copper-based spray friction plate |
| ZHANG Guo-hong1， XU Cheng-fa1， FENG Xiu-ming1，XU Yao1， DU Jian-hua 2 |
| 1 Hangzhou Advance Gearbox Group Co., Ltd., Hangzhou 311203, China，2 Armored Force Engineering Institute of Technology, Beijing 100000, China |
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Abstract The effects of nano-materials, ball milling and graphite morphology on tribological properties of copper-based spray friction materials were studied by adjusting the composition ratio, adding nano-materials, adopting ball milling process and changing graphite morphology. The results show that adding Ni/n-SiO2 and ball-milled Cu/natural graphite, ball-milled Cu/n-SiO2 and ball-milled Cu/natural graphite can improve the comprehensive properties of copper-based spray friction plates. Ball-milled Cu/nano graphite+ball milled Cu/natural graphite can improve the wear resistance and heat resistance of copper-based spray friction materials, but can significantly reduce the friction coefficient of friction materials. The preparation of Cu-graphite composite particles by ball milling method can increase the graphite content in the matrix of copper-based spray friction materials, thus significantly improve the heat resistance of friction materials.
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Received: 31 August 2018
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2019, Vol. 29 
