THE CRYSTALLIZATION OF DIABASE GLASS

被引：37

作者：

ZNIDARSICPONGRAC, V

KOLAR, D

机构：

[1] J. Stefan Institute, E. Kardelj University, Ljubljana, 61000

来源：

JOURNAL OF MATERIALS SCIENCE | 1991年 / 26卷 / 09期

关键词：

D O I：

10.1007/BF01130200

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The crystallization behaviour of diabase glass at elevated temperatures was studied in samples prepared by melting the diabase rock. DTA and X-ray analyses revealed the crystallization of diopside (CaO.MgO.2SiO2) at 865-degrees-C and anorthite (CaO.Al2O3.2SiO2) at 1060-degrees-C. Further, the kinetics of crystallization of diopside were studied. The phenomenological Johnson-Mehl-Avrami equation was used and the exponent n = 3/2 determined from the dependency of the volume fraction of the crystal phase (diopside) on time. The activation energy of crystallization of diabase glass 248 kJ mol-1 was estimated on the basis of DTA measurements carried out at different heating rates and found to be in good agreement with literature data for similar glass.

引用

页码：2490 / 2494

页数：5

共 18 条

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