Graphite/copper based composites have good thermal conductivity and lubricity at the same time. In this paper, we try to prepare the graphite/copper based composites with the ultra-large graphite particle size of about 1500 μm, in order to develop a more simple and efficient preparation process and obtain the composites with excellent properties. The effects of different processing parameters on the microstructure and relative density of the composites were investigated for the powder sintering products. The results show that the main factors affecting the microstructure of the composites are the content of graphite and the particle size. The relative density is relatively large for the composites from graphite particle with particle size of 1500 μm, and it can be as high as 0.67 by sintering at 1000 ℃ for 2.5 h. Using graphite particles with smaller particle size, the relative density is relatively small, and it is only 0.43 for the composites from graphite particle with particle size of 120 μm. © 2022, China Science Publishing & Media Ltd. All right reserved.
