Nanotribological behaviors of in situ nanoparticles doped molecular deposition films  

作　　者：GUO YanBao WANG DeGuo ZHANG SiWei 

机构地区：[1]School of Mechanical and Electronic Engineering, China University of Petroleum, Beijing 102249, China

出　　处：《Chinese Science Bulletin》2009年第24期4571-4576,共6页

基　　金：Supported by the National Natural Science Foundation of China (Grant No. 50575151);National Basic Research Program of China (Grant No. 2007CB607604);Opening Fund of the State Key Laboratory of Tribology at Tsinghua University (Grant No. SKLT05-02)

摘　　要：The molecular deposition films of poly (diallyl dimethylammonium chloride) (PDDA) and poly (acrylicacid) (PAA) with Cu2+ on quartz and glass substrates were prepared in laboratory first, then different bilayers films were dipped into fresh Na2S aqueous solution. As a result, CuS nanoparticles were fabricated in multilayer molecular deposition films in situ. The structure and nanotribological properties of the composite films were analyzed by ultraviolet-visible (UV-visible) spectroscopy, XPS and atomic force microscope (AFM). It was found that the CuS nanoparticles were homogeneously distributed throughout the whole film. And these films had a much smaller friction force than their substrates and higher antiwear life than pristine PDDA/PAA molecular deposition films. The fluctuation and variation trend of the topography, hardness, and friction with the AFM indentation length were also investigated.The molecular deposition films of poly （diallyl dimethylammonium chloride） （PDDA） and poly （acrylicacid） （PAA） with Cu2＋ on quartz and glass substrates were prepared in laboratory first, then different bilayers films were dipped into fresh Na2S aqueous solution. As a result, CuS nanoparticles were fabricated in multilayer molecular deposition films in situ. The structure and nanotribological properties of the composite films were analyzed by ultraviolet-visible （UV-visible） spectroscopy, XPS and atomic force microscope （AFM）. It was found that the CuS nanoparticles were homogeneously distributed throughout the whole film. And these films had a much smaller friction force than their substrates and higher antiwear life than pristine PDDA/PAA molecular deposition films. The fluctuation and variation trend of the topography, hardness, and friction with the AFM indentation length were also investigated.

关 键 词：CuS纳米粒子 分子沉积膜 摩擦学行为 原位 原子力显微镜 铜纳米粒子 掺杂 二甲基氯化铵 

分 类 号：O484.4[理学—固体物理] TB383[理学—物理]