【摘要】 根据玻璃形成的动力学理论,分析了高 TiO₂含量的钛酸盐玻璃的形成情况。用玻璃的粘度、差热分析等实验数据,计算了不同 TiO₂含量玻璃的 Hruby 值(K_?)、成核速率（I_v）、晶化活化能（E_c）和临界冷却速率(R_?)。结果表明,随玻璃组份中 TiO₂含量的增加、B₂O₃量的减少,玻璃的临界冷却速率值增大,玻璃形成趋于困难。含50mol% TiO₂玻璃的 R_c 值约为10³K/s。更多还原

【Abstract】 Based on the kinetics theory of glass formation,the glass-forming tendency oftitanate glasses with high TiO₂ contents was analyzed.From the experimental dataof viscosity and differential thermal analyses,the Hruby’s value (K_?),the nuclea-tion rate （I_v）,the activition energy of crystallization （E_c） and the critical coolingrate （R_c） were calculated.The results show that,as TiO₂ content increases and B₂O₃content decreases in the glasses,the critical cooling rate of the glasses increases,and the glass formation becomes more difficult.The R_c value of the glass containing50 mol% TiO₂ is about 10³ K/s.更多还原