ゾル-ゲル法によるβ-スポジューメン粉末の調製及び特性評価
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概要
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A fine β-spodumene type amorphous powder has been prepared by the sol gel process using LiOCH_3, AI(OC_2H_5)_3 and Si(OC_2H_5)_4 as a staring materials. By the rapid hydrolysis of alcohol solution of starting metal alkoxides in the presence of hydrochloric acid as a catalyst and with large excess of water, a gel powder was obtained. For the single phase gel, the DTA curve closely resembled the amorphous to β spodumene (Li_2O・Al_2O_3 4SiO_2) reaction. At 800℃, the crystalline phase comprised the major phase of p spodumene and the minor phase of p eucryptite (Li_2O・Al_2O_3・2SiO_2) . For 1000℃ and 1200℃ calcination, the XRD patterns showed pronounced growth of p spodumene. The diffraction lines of p eucryptite disappeared at 1200℃.
- 社団法人日本セラミックス協会の論文
- 1994-02-01