A series of Na₂O – B₂O₃ – Nb₂O₅ – Bi₂O₃ glasses are synthesized, and their differential thermal analysis (DTA) thermograms are explored at different heating rates. Based on the DTA thermograms, the glass transition temperature (T_gl) and the crystallization peak temperature (T_pc) along with the activation energy of glass transition (E_Gl) and the activation energy of crystallization (E_pc) were determined. The results revealed a decrement of T_gl and E_Gl upon increasing the Nb₂O₅ + Bi₂O₃ content from 0 to 0.15, then, both T_gl and E_Gl increase beyond this limit. Meanwhile, there is a decrement in the values of T_pc and E_pc with a continuous increment of the Nb₂O₅ + Bi₂O₃ content. The behavior of the thermal parameters is correlated to the structural variations in the glass network as a function of the Nb₂O₅ + Bi₂O₃ content. The XRD curves of the explored glasses indicate the presence of the polycrystalline phases Na₂B₄O₇, BiNbO₄, BNbO₄ in the amorphous matrix.

合成了一系列Na ₂ O – B ₂ O ₃ – Nb ₂ O ₅ – Bi ₂ O ₃玻璃，并研究了在不同加热速率下的差热分析（​​DTA）热分析图。基于所述热分析DTA，玻璃化转变温度（Ť _GL）和结晶峰温度（Ť _PC与玻璃化转变的活化能（沿）Ë_胃肠）并结晶（活化能ë _PC）进行测定。结果显示T _gl和E减少_GL在将Nb增加₂ ö ₅  +的Bi ₂ ö ₃从0内容0.15，然后，既Ť _GL和Ë _GL增加超出此限制。同时，随着Nb ₂ O ₅  + Bi ₂ O ₃含量的连续增加， T _pc和E _pc的值减小。热参数的行为与玻璃网络中作为Nb ₂ O ₅  + Bi ₂ O ₃的函数的结构变化相关。内容。所探索玻璃的XRD曲线表明在非晶基质中存在多晶相Na ₂ B ₄ O ₇，BiNbO ₄，BNbO ₄。