Effect of CVD carbon content on the properties of copper-based powder metallurgy clutch material
WANG Xiufei1, LI Bingju2, ZHANG Xiang2, YI Xu2, WANG Bin2, TAN Zhoujian2
1. Foshan Research Institute, South China University of Technology, Foshan 528051, China; 2. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
Abstract The cutting debris of C/C composites prepared by chemical vapor deposition (CVD) was used as the source of carbon powder. Chemical vapor deposition (CVD) carbon powder/copper-based powder metallurgy friction materials with different CVD carbon powder contents were prepared by powder metallurgy method. The microstructure and composition of the friction surface of the materials were analyzed by scanning electron microscope (SEM) and energy dispersive spectrometer (EDS). The mechanical properties, friction and wear properties were also studied. The results show that the brinell hardness, density and compressive strength of CVD carbon powder/copper-based powder metallurgy materials decrease and the open porosity increases respectively with increasing the content of CVD carbon powder. The CVD carbon powder is smooth layer pyrolytic carbon. The main wear mechanism of 1%-2% CVD carbon powder/ copper-based powder metallurgy materials is abrasive wear, and the main wear mechanism of 3%-5% CVD carbon powder/copper-based powder metallurgy materials samples is mixture of abrasive and delamination wear.
WANG Xiufei,LI Bingju,ZHANG Xiang, et al. Effect of CVD carbon content on the properties of copper-based powder metallurgy clutch material[J]. Materials Science and Engineering of Powder Metallurgy, 2019, 24(2): 129-136.
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2019, Vol. 24 
