SiO2-Al2O3-P2O5系透明微晶玻璃的制备及表征

Preparation and characterization of the SiO2 - A1203 - P205 glass-ceramics

采用熔融及分部晶化法制备出掺钕SiO2-A12O3-P2O5系微晶玻璃．采用差热分析、X射线衍射及荧光光谱仪对材料进行表征。结果表明，在490-590℃保温2-4h，而后在600-700℃保温5-7h，可制得主晶相为AlPO4的透明微晶玻璃，由于Nd^3＋在热处理后富集在晶相中，使荧光光谱线在1054nm处峰值比原始玻璃强度大。

The SiO2-A1203-P2O5-SiO2 glass-ceramics which is doped neodymium was prepared by melting and the technology of crystallization. And it was characterized by DTA,XRD,fluorescence spectrometer. It indicated that the transparent glass-ceramics whose main crystal phase is AlPO4 would be made.The temperature of nuclear generation is at the range from 490 to 590℃, and the time of treatment is about 2-4h.Then the temperature of crystallization is at the range from 600 to 700℃, and the time of treatment is about 5-7h.Because of the concentrating of Nd^3＋ in the crystal phase after the heat treatment, the intensity of the peak which belongs the sample is bigger than the intensity which belongs the host glass at 1054nm in fluorescence spectra.