논문 해외 국제전문학술지(SCI급) Sintering and crystallization of (SrO·SiO2)-(SrO·Al2O3·2SiO2) glass-ceramics
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 1999-10
- 저자명 Yun-Mo Sung & Joon Sik Park
- 학술지명 Journal of Materials Science
- 발행처명 SPRINGER LINK
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 2
홈페이지
논문 초록 (Abstract)
In the ternary SrO-Al2O3-SiO2 system the pseudobinary join composition of 50 wt % SrO·SiO2–50 wt % SrO·Al2O3·2SiO2 (SS-SA2S) showed a glass melting temperature of ∼1500 °C and a crystallization peak temperature of ∼1100 °C. The (SS-SA2S) glass-ceramic pellets prepared by cold pressing and pressureless sintering, showed very low porosity. The (SS-SA2S) glass-ceramics containing B2O3 and those containing B2O3 and TiO2 revealed crystallization peak temperatures of ∼1000 °C and unexpectedly high porosity. By applying Kissinger analyses to the DTA data the activation energy values for crystallization of the three glass-ceramics were determined to range from 196 to 255 kJ/mol. The Ozawa analyses on the DTA data gave the Avrami parameter values at 3.69 to 3.95. The X-ray diffraction (XRD) patterns from the three glass-ceramics revealed formation of the equilibrium crystalline phases of SrO·SiO2 and SrO·Al2O3·2SiO2 (monocelsian).