Effect of cooling rate on crystallization in an aluminophosphosilicate melt

S. J. Liu, Yanfei Zhang, Yuanzheng Yue

Research output: Contribution to journalJournal articleResearchpeer-review

11 Citations (Scopus)

Abstract

The effect of cooling rate on spontaneous crystallization behavior of an alumino-phospho-silicate melt is studied by means of differential scanning calorimetry, X-ray diffraction, scanning electron microscopy and viscometry. The cooling rates of 160, 2100 and 12000 K/s are attained by subjecting the glass melt to the casting, pressing and fiber-drawing processes, respectively. Results show that phase separation occurs in the melt during cooling, and leads to the internal nucleation and opalescence in the studied glass. The degree of phase separation increases with decreasing the cooling rate. Hence, the opalescence of the glass can be tuned by adjusting the cooling rate. This makes the production of opal glasses or transparent glass ceramics more efficient and energy saving, since the conventional isothermal treatment procedure can be left out.
Original languageEnglish
JournalPhysics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B
Volume52
Issue number6
Pages (from-to)231–235
Number of pages5
ISSN1753-3562
Publication statusPublished - 2011

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