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Scratch-Resistant Improvement of Sol-Gel Derived Nano-Porous Silica Films

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Abstract

Scratch-resistance of sol-gel derived nano porous silica films were studied. The thin films were prepared with a dip-coating method from both one-step and two-step catalyzed silica sols, and treated in a mixture gas of ammonia and water vapour afterwards. The thin films were characterized by using Atomic Force Microscope (AFM), ellipsometer, Fourier-transform Infrared Spectroscope (FTIR), respectively. Experimental results have shown that the two-step catalysis remarkably improves strength of the films, and abrasion-resistance and adhesion of the silica films were further increased after the mixture gas treatment. It is attributed to the cross-linking of silica particles in the sols by randomly branched or/and entangled linear chains and more Si–O–Si bonds formed by the mixture gas treatment.

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Authors and Affiliations

  1. Pohl Institute of Solid State Physics, Tongji University, Shanghai, 200092, P.R. China

    Jue Wang, Guangming Wu, Jun Shen, Tianhe Yang, Qinyuan Zhang, Bin Zhou, Zhongsheng Deng & Fengshan Zhang

  2. Shanghai Institute of Technical Physics, Chinese Academy of Science, Shanghai, 200083, P.R. China

    Bin Fan & Dongping Zhou

Authors
  1. Jue Wang
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  2. Guangming Wu
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  3. Jun Shen
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  4. Tianhe Yang
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  5. Qinyuan Zhang
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  6. Bin Zhou
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  7. Zhongsheng Deng
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  8. Bin Fan
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  9. Dongping Zhou
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  10. Fengshan Zhang
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Wang, J., Wu, G., Shen, J. et al. Scratch-Resistant Improvement of Sol-Gel Derived Nano-Porous Silica Films. Journal of Sol-Gel Science and Technology 18, 219–224 (2000). https://doi.org/10.1023/A:1008787722437

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  • DOI: https://doi.org/10.1023/A:1008787722437

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