期刊
INTERNATIONAL JOURNAL OF APPLIED GLASS SCIENCE
卷 13, 期 4, 页码 676-683出版社
WILEY PERIODICALS, INC
DOI: 10.1111/ijag.16577
关键词
applications; flat glass; float glass; glass manufacturing; products; surface roughness
The surface roughness of glass, which affects various properties, can be controlled by a novel etching scheme using gaseous hydrogen fluoride under high temperature. This method allows for rapid and reproducible control of the surface nano-roughness of silicate glasses by changing the reaction temperature.
Surface roughness of glass is desired to be arbitrary controlled because it affects a variety of properties such as tactile impression, optical properties, and contact chargeability. While the surface modification is currently achieved by wet etching of the glasses with hydrofluoric acid, there is still room for improvement because the wet etching cannot be simultaneously applied during flat glass production. We recently developed novel etching scheme, which uses gaseous hydrogen fluoride (HF) under high temperature. Because the flat glasses are kept hot during the production, our procedure can be introduced to the flat glass production process. Here, we demonstrate that surface nano-roughness (1-20 nm of arithmetic mean roughness) of silicate glasses can be rapidly and reproducibly controlled by our method with changing the reaction temperature. It was found that the reaction with gaseous HF heterogeneously left metal fluorides on the glasses and that the fluorides partially masked the further reaction. High reaction temperature led the fluoride particles larger, resulting in rougher surface after removing the fluoride layer. It took only a few seconds for this reaction.
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