Transparent Oxyfluoride Glass-ceramics Containing CaF2 Nano-Crystalline Phase

摘要：

　　Transparent oxyfluoride tellurite glass with the composition of TeO2-SiO2-AlF3-CaO-KF system were prepared by conventional melting and annealing technique,and the transparent oxyfluoride glass-ceramics containing CaF2 nano-crystallines were obtained by controlled heat-treatment.The effect of heat-treatment schedules on the crystallization behavior and the microstructure of the glass-ceramics were analyzed by differential scanning calorimetry analysis,X-ray diffraction analysis,infrared spectrum and scanning electron microscopy.The sole CaF2 crystalline phase was confirmed,the spherical CaF2 nano-crystallines embed homogeneously among the glassy matrix after crystallization.The size of CaF2 grains grew with the increase of crystallization temperature and holding time.Te and Si atoms existed in TeO3 and SiO4 forms.Part of Al atoms existed in the form of AlO4 and formed network together with SiO4 tetrahedron.The other Al atoms acted as modifiers in the form of AlO6.The transmittance of glass-ceramics can reach 85 % in visible light and 90 % in infrared waveband.The novel transparent oxyfluoride tellurite glassceramics are excellent matrix materials in up-conversion luminescence field.

关键词： Oxyfluoride glass-ceramics CaF2 nano-crystalline Tellurite glass Microstructure

作者: Zhaoxia Hou Zhaolu Xue Shaohong Wang Xiaodan Hu Haoran Lu Changlei Niu Hao Wang Cai Wang Yin Zhou

作者单位: Key Laboratory of Advanced Materials Technology of Liaoning Province,Shengyang University,Shengyang 110044,China

会议类型: 国际会议

会议名称: The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))

会议地点: 厦门

会议语种:英文

页码: 1015-1018

在线出版日期: 2011-11-04（万方平台首次上网日期，不代表论文的发表时间）