Sb掺杂的V2O5-P2O5系统封接玻璃的形成能力与热稳定性

Forming Ability and Thermal Stability of Sb∶V_2O_5-P_2O_5 System Sealing Glasses

采用差热(Differential Thermal Analysis,DTA)和X射线衍射(X-ray Diffraction,XRD)对xV2O5-(100-x)P2O5(摩尔比,70≤x≤90)和(80-x)V2O5-20P2O5-xSb2O3(摩尔比,1≤x≤10)系列玻璃试样进行了分析,并采用修正的Kissinger方程对玻璃的形成能力和热稳定性进行了表征,发现:V2O5-P2O5系封接玻璃在析晶温度处理后,晶相为V2O5,随着Sb2O3引入量的逐渐增大,玻璃转变温度(Glass Transition Temperature,Tg)变化较小(≤20.5K),而玻璃的稳定性因子|Tcs-Tg|(Tcs,Low Limit Crystallization Temperature)逐渐从72.0K增大到157.2K,析晶活化能由126.9KJ/mol逐渐增大到193.0KJ/mol,说明Sb2O3的引入能增大玻璃的形成能力与热稳定性。

A series of sealing glass was prepared according to the formula of mole percentage xV2O5- （100-x）P2O5（80≤x≤ 90） and （80-x） V2O5-20P2O5-xSb2O3 （1 ≤ x≤10）. The different ratio samples were analyzed by Differential Thermal Analysis, X-ray diffraction, respectively. The kinetic parameters, such as crystallization activation energy, was calculated by the modified Kissinger equation. The results show that the crystalline phase of the samples added with Sb2O3 did not alter and the main crystalline phase are VzOs. Antimony doped into V2O5-P2O5 system sealing glass can increase the glass stabilization index ] Tcs-Tg [ significantly from 72.0K to 157.2K and the transition temperature changes little （〈 = 20.5K）, and the activation energy increased from 126.9 to 193.0KJ/mol. Based on the above research, the forming ability and thermal stability can be increased by doped antimony in V2O5-P2O5 system sealing glass.