Scratch-resistant improvement of sol-gel derived nano-porous silica films

被引：35
|
作者：
Wang, J [1 ]
Wu, GM
Shen, J
Yang, TH
Zhang, QY
Zhou, B
Deng, ZS
Fan, B
Zhou, DP
Zhang, FS
机构：
[1] Tongji Univ, Pohl Inst Solid State Phys, Shanghai 200092, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Tech Phys, Shanghai 200083, Peoples R China
来源：
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2000年 / 18卷 / 03期
基金：
中国国家自然科学基金;
关键词：
sol-gel process; silica film; AFM; refractive index;
D O I：
10.1023/A:1008787722437
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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.
引用
收藏
页码：219 / 224
页数：6
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