Synthesis and tribological properties of copper-alumina nanocomposites prepared by coprecipitation technique

Xuelong Fu; Yubing Hu; Jie Tao

doi:10.1007/s11595-016-1500-y

Journal of Wuhan University of Technology Materials Science Edition ›› 2016, Vol. 31 ›› Issue (5) : 1123 -1130. DOI: 10.1007/s11595-016-1500-y

Metallic Materials

Synthesis and tribological properties of copper-alumina nanocomposites prepared by coprecipitation technique

Xuelong Fu ¹^,²^,³
, Yubing Hu ¹^,³
, Jie Tao ¹^,³^,^{^c}

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Abstract

The objective of this work is to study the synthesis of copper-alumina nanocomposites using the coprecipitation process and hot-pressing method, and investigate their mechanical properties. The effects of calcination temperature on the average size of composite particles and chemical composition after calcination were also analyzed. The sintering parameters including sintering temperature, hot pressure and packing time were optimized to fabricate the alumina nanoparticles reinforced copper matrix composites (CMCs). The density, microhardness and tribological properties of the CMCs reinforced with 1 wt%, 2 wt%, 3 wt%, 4 wt% and 5 wt% of alumina nanoparticles were investigated correspondingly. The results showed that the optimum preparation parameters for the CMCs were 900 °C of hot pressing temperature, 27.5 MPa of hot pressure and 2 hrs of packing time. The CMC reinforced with 2 wt% of alumina nanoparticles had the lowest wear rate, with the relative wear resistance of 3.13.

Keywords

copper matrix composites / alumina nanoparticles / wear rate / coprecipitation method

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Xuelong Fu, Yubing Hu, Jie Tao. Synthesis and tribological properties of copper-alumina nanocomposites prepared by coprecipitation technique. Journal of Wuhan University of Technology Materials Science Edition, 2016, 31(5): 1123-1130 DOI:10.1007/s11595-016-1500-y

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