氟铟酸盐玻璃的形成能力判定  

Evaluation of Glass-Forming Ability of Fluoroindate Glasses

作　　者：马秀文[1] 董大奎[1] 朱基千[1] 

机构地区：[1]同济大学

出　　处：《玻璃与搪瓷》1998年第3期1-5,共5页Glass & Enamel

基　　金：上海市教委自然科学基金

摘　　要：本文研究了氟铟酸盐玻璃中ＣｄＦ２／ＺｎＦ２比值变化对玻璃形成能力的影响。ＤＴＡ测定了各玻璃样品的特征温度：玻璃转变温度Ｔｇ，析晶起始温度Ｔｘ，析晶峰值温度Ｔｐ和熔化温度Ｔｍ。计算了玻璃形成能力判据ΔＴ，Ｈ′，Ｈｒ，Ｓ之值，析晶活化能Ｅ，以及ｋ（Ｔｇ）和ｋ（Ｔｐ）参数值。引入一个新的参数ｋｂ（Ｔ）作为玻璃形成能力判据，其判定结果与其它方法的结果作了比较。ｋｂ（Ｔ）判据不受升温速率的影响，能在较宽的温度范围判定玻璃的形成能力。结果表明，当ＣｄＦ２／ＺｎＦ２＝１时，玻璃具有较好的形成能力。he influence of the change of CdF2/ZnF2 ratio on glass-forming ability in fluoroindate glasses was studied. The characteristic temperatures, such as the glass transition temperature Tg, onset of crystallization temperature Tc, crystallization peak temperature Tp and the melting temperature Tm of various glass samples were determined by means of differential thermal analysis (DTA).The values of the glass-forming ability criteria ΔT,H′, Hr and S, the activation energy of crystallization E, and kinetic parameters k(Tg) and k(Tp) were caculated. A new parameter kb(T) was introduced to the glass-forming ability criteria. The forming ability of various glasses was estimated by the new criterion,and compared with those evaluated by other criteria. The obvious advantage of this method is that it can evaluate the glass-forming ability over a broad temperature and at different heating rates. It is shown that the sample with CdF2/ZnF2=1 has better glass-forming ability.

关 键 词：氟铟酸盐玻璃 形成能力 玻璃 

分 类 号：TQ171.716[化学工程—玻璃工业] TQ171.1[化学工程—硅酸盐工业]