J. Korean Ceram. Soc. > Volume 20(2); 1983 > Article
 Journal of the Korean Ceramic Society 1983;20(2): 107.
 공심법과 (Sr-Ti)수산염에 의한 고순도의 $SrTiO_3$ 합성에 관한 연구 이종권, 이병하1 한양대학교1한양대교 Preparation of High Purity $SrTiO_3$ by Coprecipitation and Strontium Titanyl Oxalates ABSTRACT Formation of Strontium titanate from the products of coprecipitation takes place at 110$0^{circ}C$ which is 200-30$0^{circ}C$ lower than that from mechanical mixtures of $SrCO_3$ and $TiO_2$. This is apparently due to the nature of the compounds formed by the reaction of mixtures of aqueous solutions of $SrCl_2$ and $TiCl_4$ with an ammoniacal solution of ammoni-um carbonate and ammonium hydroxide. A procedure is described for preparing strontium titanyl oxalate tetrahydrate in the several mole ratio of $TiCl_4$ to $SrCl_2$. STrontium titanyl oxalates decompose to titanate at elevated temperature. The coprecipitates and the fired specimen were subjected to examined thermal and X-ray analyses and microstruc-ture by SEM.
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