Nanotribological behaviors of in situ nanoparticles doped molecular deposition films |
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Authors: | YanBao Guo DeGuo Wang SiWei Zhang |
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Affiliation: | School of Mechanical and Electronic Engineering, China University of Petroleum, Beijing 102249, China |
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Abstract: | The molecular deposition films of poly (diallyl dimethylammonium chloride) (PDDA) and poly (acrylica-cid) (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 fab-ricated 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. |
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Keywords: | molecular deposition films nanoparticles in situ nanotribology |
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