摘要
以赤泥为主要原料 ,制备了黑色玻璃。应用差热分析 (DTA) ,利用Augis Bennett方程和修正的Kissinger方程研究了玻璃析晶动力学 ,由两种方法计算得到的析晶活化能基本相同 ,同时采用ky(T) =A·exp[(-E/RT)× (T/Tp) ]为判据 ,比较了铁含量对玻璃稳定性的影响。结果表明 :铁含量增高 ,玻璃稳定性下降 ,有利于玻璃的晶化 ,高铁含量玻璃中c(Fe2 + ) /c(Fe3 + )比值更接近于Fe3 O4 的比值 ,不同价态铁的相对含量不同 ,玻璃稳定性不同。
The crystallization kinetics of glasses using red mud as raw materials was investigated by different thermal analysis(DTA). DTA experiment results were analyzed by Augis Bennett method and modified Kissinger method. The crystallization activation energies obtained from both Augis Bennett method and modified Kissinger method are almost the same. The stability of red mud glasses was evaluated by the crystallization kinetics criterion k y(T)=A ·exp[- E/(RT)×( Δ T/T p)]. The results showed that the stability of red mud glasses is decreased with the increase of Fe 2O 3 content, thus make the glasses be favorable for crystallization. The ratio of c (Fe 2+ ) to c (Fe 3+ ) in the glass of higher Fe 2O 3 content is more close to the ratio of Fe 3O 4 . The stability of red mud glasses changes resulting in various ratio of c (Fe 2+ ) to c (Fe 3+ ).
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2000年第4期551-554,共4页
The Chinese Journal of Nonferrous Metals
基金
国家自然科学基金!资助项目 ( 2 97610 0 1)
广西自然科学基金!资助项目 ( 982 40 0 2 )
广西"十百千人才工程"专项基金
关键词
赤泥
玻璃稳定性
析晶活化能
黑色玻璃
red mud
stability of glass
crystallization activation energy
