Pr^(3+)/Yb^(3+)共掺氟锆酸盐玻璃的热分析

Thermal Analysis of Pr^(3+)/Yb^(3+)-Codoped Fluozirconate Glass

在对不同PbF2 含量的Pr3+/Yb3+共掺的ZBLAPN玻璃的差热分析后 ,发现含PbF2 大于 4.5 % (摩尔分数 )后 ,差热曲线上的析晶峰出现了分裂 ,经扫描电镜分析 ,含铅量高的玻璃中出现了分相 ,各相的含铅量不同 ,这引起玻璃热稳定下降。

After differential thermal analysis (DTA) of different concentrations of PbF 2 of Pr 3+ /Yb 3+ codoped fluozirconate glass is carried out under dried nitrogen,the results show that the thermal stability decreases with the concentration of PbF 2 up to 4.5%mol,DTA curves appear to have two crystallisation peaks above T g. The scanning electron micrographs of the samples appear to have phase separation in which the concentration of PbF 2 is different from basic phase.