Tribological properties of Cu-based composites with S-doped NbSe2
来源期刊：Rare Metals2015年第6期
论文作者：Bei-Bei Chen Shuai Chen Jin Yang Hong-Ping Li Shun Guo Hua Tang Chang-Sheng Li
文章页码：407 - 412
摘 要：n this study, S-doped Nb Se2(NbS0.2Se1.8) powders were fabricated, and the corresponding Cu-based composites(Cu/Nb S0.2Se1.8) were obtained by powder metallurgy technique. The phase compositions, physical, and tribological properties of Cu-based composites were investigated systematically. The results show that Cu matrix reacts with Nb S0.2Se1.8to produce Cu2 Se and Cu0.38 Nb S0.2Se1.8during sintering process, which influences the physical and tribological properties of Cu-based composites significantly. Specially, with Nb S0.2Se1.8content increasing, the density of Cu/Nb S0.2Se1.8composites decreases, and the hardness increases firstly and then decreases, while the electric resistivity increases slightly. In addition, the incorporation of Nb S0.2Se1.8enhances the tribological properties of Cu greatly, which is attributed to the lubricating effect of Cu0.38 Nb S0.2Se1.8and the reinforcement effect of Cu2 Se. In particular, when the content of Nb S0.2Se1.8is 6 wt%, the Cu-based composite has the best tribological properties.
Bei-Bei Chen，Shuai Chen，Jin Yang，Hong-Ping Li，Shun Guo，Hua Tang，Chang-Sheng Li
Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University
摘 要：n this study, S-doped Nb Se2(NbS0.2Se1.8) powders were fabricated, and the corresponding Cu-based composites(Cu/Nb S0.2Se1.8) were obtained by powder metallurgy technique. The phase compositions, physical, and tribological properties of Cu-based composites were investigated systematically. The results show that Cu matrix reacts with Nb S0.2Se1.8to produce Cu2 Se and Cu0.38 Nb S0.2Se1.8during sintering process, which influences the physical and tribological properties of Cu-based composites significantly. Specially, with Nb S0.2Se1.8content increasing, the density of Cu/Nb S0.2Se1.8composites decreases, and the hardness increases firstly and then decreases, while the electric resistivity increases slightly. In addition, the incorporation of Nb S0.2Se1.8enhances the tribological properties of Cu greatly, which is attributed to the lubricating effect of Cu0.38 Nb S0.2Se1.8and the reinforcement effect of Cu2 Se. In particular, when the content of Nb S0.2Se1.8is 6 wt%, the Cu-based composite has the best tribological properties.
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