シリカゲルのガラス化

概要

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Transformation of pure silica gel at high temperature was reexamined. Finely divided silica gel (I) was prepared from tetraethyl ortho silicate and then pressed to a disc. It was found to vitrify into translucent mass by heating at about 1150°C in a vessel made of silica glass. In platinum vessel, it was liable to convert into cristobalite. Silica gel (II) was prepared by the hydrolysis of silicon tetrachloride with water and dried to a lump. It became transparent at somewhat lower temperature of 1050°C, then began to pop at about 1100°C owing to the release of minor component, probably water confined therein.
社団法人日本セラミックス協会の論文
1965-01-01