PBZS低熔玻璃的Raman光谱及性能

Raman Spectra and Properties of PBZS Low Melting Point Glasses

选择P2O5-B2O3-ZnO-SnO(PBZS)低熔玻璃体系,利用Raman光谱、差热分析(DTA)和热膨胀仪等研究玻璃中SnO/ZnO比对玻璃结构和性能的影响,分析了该体系玻璃特征温度(Tg及Tf)、热膨胀系数(α)、体积电阻率(Rv)及其变化规律。结果表明:在该体系中,随着SnO/ZnO比的上升,玻璃Raman光谱特征峰1080cm-1和775cm-1都向低波数漂移,形成无定形的BPO4和ZnSn2(PO4)2聚合体;玻璃的特征温度先上升后下降,膨胀系数先下降后上升,在SnO/ZnO等于1.25附近出现极值;玻璃的电阻率随着温度的上升快速下降,但在250℃时,基本上只与温度有关,而与SnO/ZnO比无关。

P2O5-B2O3-ZnO-SnO（PBZS）low melting point glass system was selected,using Raman spectroscopy,differential thermal analysis（DTA）and thermal expansion instrument,effects of SnO/ZnO ratio on glass structure and properties were studied,characteristic temperature（Tg and Tf）,thermal-expansion coefficient（α）,volume resistivity（Rv）and their change rules for the system were analyzed.The results show that the glass Raman spectral signature peaks at 1080cm-1 and 775cm-1 drift to lower wave numbers with increasing SnO/ZnO ratio,amorphous BPO4 and ZnSn2（PO4）2 polymers in this system are formed;the glass characteristic temperature rises firstly and then drops,the glass expansion coefficient drops firstly and then rises,and present their extreme values when SnO/ZnO equals to 1.25,the glass electronic resistivity decreases rapidly with increasing temperature,it only relates to temperature at 250℃,but has nothing to do with the SnO/ZnO ratio.