|
|
Journal of the Korean Ceramic Society 1983;20(1): 43. |
$SrCO_3$와 $TiO_2$를 사용한 $SrTiO_3$의 합성반응에 관한 연구 |
이종권, 이병하 |
한양대학교 |
Synthesis of $SrTiO_3$ from the Mixtures of $SrCO_3$ and $TiO_2$ |
|
|
|
|
|
ABSTRACT |
The formation of strontium titanate from several molar $SrCO_3$ and $TiO_2$ mixtures was studied in air and $CO_2$ gas Mixtures of $SrCO_3$ and $TiO_2$ were heated in air at 400-$600^{circ}C$ DTA-TG was used to obtain thermal histories of simples heated in air and $CO_2$ gas. X-ray diffraction analysis was used to determine both the phase composition and the amounts of each phase present. The phase relationship of various compounds $SrTiO_3$, $Sr_2TiO_4$, $Sr_2Ti_3O_7$ and $Sr_4Ti_3O_{10}$ formed by the sintering in each composition was shown by the calibration curves. High temperature X-ray analysis was used to determine both the formation process and deformation process of each products. Small amount of SrTiO3 is formed first at the surface af contact SrTiO3 reacts with $SrCO_3$ to form Sr2TiO4 this is affected on the $CO_2$ pressure. |
|
|
|