치관보철용 CaO-MgO-SiO2-P2O5-TiO2계 글라스 세라믹의 결정화와 기계적 물성에 미치는 열처리 조건의 영향
Effects of Heat-treatment on Crystallization and Mechanical Properties of Glass ceramics for Dental crown prosthesis in the system CaO-MgO-SiO2-P2O5-TiO2
Glass ceramics for dental crown prosthesis were prepared by crystallization of CaO-MgO-SiO2-P2O5-TiO2 glasses. Their crystallization behaviors have been investigated as a function of heat-treatment temperature and holding time in relation to mechanical properties.The results are as follows:Vickers hardness and bending strength of glass ceramics increased due to the precipitation ofapatite, whitlockite, -wollastonite, magnesium titanate, and diopside crystal phases within glassmatrix. The final crystalline phase assemblages and the microstructures of the glass ceramics were foundto be dependent on heat-treatment temperature and holding time.Vickers hardnes and bending strength of glass ceramics increased with increasing heat-treatmenttemperature and holding time.
목차
Abstract Ⅰ. 서론 Ⅱ. 연구방법 1. 재료 및 시편제조 2. 기기분석 Ⅲ. 연구결과 및 고찰 1. 유리형성능 2. 열분석 3. X선 회절 분석 4. 미세구조 분석 5. 기계적 특성 Ⅳ. 결론 참고문헌
키워드
Glass ceramicsVickers hardnessBending strengthHeat-treatment temperature