ゾル-ゲル法によるZrSiO_4粉末の合成(第4報) : ZrOCl_2とコロイダルSiO_2からの合成

概要

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rights: 社団法人日本セラミックス協会rights: 本文データは学協会の許諾に基づきCiNiiから複製したものであるrelation: IsVersionOf: http://ci.nii.ac.jp/naid/110002291006/ZrSiO_4 fine powders were prepared from zirconium oxychloride (ZrOCl_2) and colloidal silica (SiO_2). Effects of the concentration of ZrOCl_2, calcination temperature, heating rate and size of secondary particles after hydrolysis on the preparation of ZrSiO_4 fine powders have been studied. The ZrSiO_4 precursors having Zr-O-Si bond were found in all the solutions after hydrolysis, and the formation rate of ZrSi0_4 was influenced significantly by the concentration of ZrOCl_2. Also the rate in the case of other concentrations than 0.4 M was affected remarkably by heating rate, and there was a marked tendency for crystallization of ZrO_2 and SiO_2 to proceed preferentially and creation of ZrSiO_4 nucleus to be obstructed when the heating rate was slow. It is shown that ZrSiO_4 fine powders of the single phase were prepared at a relatively low temperature such as 1300℃ by forming the ZrSiO_4 precursors having Zr-O-Si bond and by controlling the secondary particle size after hydrolysis.
社団法人日本セラミックス協会の論文
1991-03-01