(上海理工大學 材料科學與工程學院，上海 200093)
摘 要: 通過控制化學鍍Ni-P過程中的Ni-P層的沉積時間和Ni-P-PTFE鍍液中PTFE的濃度，利用電子掃描顯微鏡(SEM)、X射線衍射儀(XRD)、納米壓痕儀、HSR-2M摩擦磨損試驗機對Ni-P-PTFE復合鍍層的硬度和摩擦磨損性能進行表征，研究化學鍍過程中不同Ni-P過渡層沉積時間和PTFE濃度對Ni-P-PTFE復合鍍層的硬度和摩擦性能的影響規(guī)律。結果表明：當Ni-P過渡層沉積時間為15 min，PTFE濃度(體積分數(shù))為5%時，Ni-P-PTFE復合鍍層的表面光滑均勻，與基體結合得更加緊密；Ni-P-PTFE層最高硬度為4.548 GPa，最低摩擦因數(shù)為0.145，復合涂層的力學和摩擦性能達到最優(yōu)。
關鍵字: Ni-P-PTFE復合鍍層；化學鍍；Ni-P過渡層沉積時間；PTFE濃度；硬度；摩擦性能
（School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China）
Abstract:In order to study the influence of Ni-P deposition time and PTFE concentration on the hardness and friction property of Ni-P-PTFE composite coating, by controlling the deposition time of Ni-P and the concentration of PTFE, the hardness and friction property of Ni-P-PTFE composite coating were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Nano Indenter and HSR-2M friction wear testing machine. The results show that when the deposition time of Ni-P transition layer is 15 min and the PTFE concentration (volume fraction) is 5%, the Ni-P-PTFE composite coating can achieve the smooth and uniform microstructure, and the strong bond force with substrate, together with the highest hardness of 4.548 GPa and the lowest friction coefficient of 0.145. Both mechanical property of the composite coating and lubrication property are the best.
Key words: Ni-P-PTFE composite coating; electroless; Ni-P deposition time; PTFE concentration; hardness; friction property
