NONISOTHERMAL DEVITRIFICATION BEHAVIOR OF DIOPSIDE GLASS

被引：13

作者：

BRANDA, F

COSTANTINI, A

BURI, A

机构：

[1] Dipartimento di Ingegneria dei Materiali e della Produzione, Università di Napoli

来源：

THERMOCHIMICA ACTA | 1993年 / 217卷

关键词：

D O I：

10.1016/0040-6031(93)85109-M

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The non-isothermal devitrification of diopside CaO . MgO . 2SiO2 glass has been studied. The crystal growth activation energy has been evaluated as E(c) +/- 137 +/- 10 kcal mol-1. The devitrification occurs in bulk samples through a surface nucleation mechanism. Surface nuclei behave as bulk nuclei in very finely powdered samples sintered before devitrifying. Optical and scanning electron microscopy support these conclusions.

引用

页码：207 / 212

页数：6

共 7 条

[1] RELATIONSHIP BETWEEN DTA PEAK AND MAXIMUM REACTION RATE [J].