Abstract
The non-isothermal devitrification of diopside CaO · MgO · 2SiO 2 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.
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