| 학회 | 한국재료학회 |
| 학술대회 | 2009년 가을 (11/05 ~ 11/06, 포항공과대학교) |
| 권호 | 15권 2호 |
| 발표분야 | E. Frontiers of Materials Research(선도 재료연구) |
| 제목 | The Al2O3 effect on the structure and thermal properties of phosphate glasses |
| 초록 | In this study, thermal properties of phosphate glasses containing alumina and alkali oxide were measured. Aluminophosphate structural network of these glasses was investigated with increasing alumina contents. Alumina was selected to control the structural network of aluminophosphate glass since conventional explanation has been that Al tetrahedral and P tetrahedral form cross linked AlOP networks. The thermal expansion, glass transition temperature and viscosity at high temperature of aluminophosphate glass were determined. In general, alumina additions increase the glass transition temperature, decease thermal expansion. However, the composition/thermal property relationships are other influenced by relative cation ratios and thus the overall O/P ratio. Compositional variations that change the dominant phosphate structure from metaphosphate and orthophosphate are accompanied by a transformation in the dominant Al coordination, complicating the effect that alumina has on glass properties. However, these structural modifications can lead to compositions with improved thermal stability. |
| 저자 | 임상혁, 나영훈, 김남진, 김휘성, 류봉기 |
| 소속 | 부산대 |
| 키워드 | phosphate glass; structural network; aluminophosphate; thermal property |
