Preparation of Shaped Glasses Through the Sol-Gel Method
In the sol-gel preparation of oxide glasses using metal alkoxides as raw materials, the content of water added for hydrolysis of the alkoxides must be controlled depending on the desired shape of the resulting glass. Larger water contents of the starting solution are preferred for the production of bulk glasses, while smaller water contents lead to the formation of fiber glasses. The cross-section of glass fibers made by the sol-gel method is circular or non-circular, depending on the composition of the starting solution. This effect is examined, and it is shown that the volume change of gelling fibers occurring during the solidification process is related to the shape of the cross-section of the resulting glass fibers.
KeywordsOxide Glass Metal Alkoxide Bulk Glass Fiber Drawing Small Volume Change
Unable to display preview. Download preview PDF.
- 2.S. Sakka, pp. 129–167 in Treatise on Materials Science and Technology, Vol. 22, Glass III, edited by M. Tomozawa and R. Doremus, Academic Press, New York (1982).Google Scholar
- 5.M. Yamane and T. Kojima, J. Non-Crystal. Solids, 44 , 181–190 (1980).Google Scholar
- 6.D. C. Bradley, pp. 410–446 in Inorganic Polymers, edited by F. G. A. Stone and W. A. G. Graham, Academic Press, New York (1962).Google Scholar