The phase transformation and crystallization kinetics of (1 - x)Li2O-xNa2O-Al2O3-4SiO2 glasses

Moo Chin Wang, Wang Long Li, Chih Wei Cheng, Kuo Ming Chang, Yong Feng Chen, Chi Shiung Hsi

研究成果: Article同行評審

9 引文 斯高帕斯(Scopus)

摘要

The phase transformation and crystallization kinetics of (1 - x)Li2O-xNa2O-Al2O3-4SiO2 glasses have been studied by using differential thermal analysis (DTA), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and electron diffraction (ED) analysis. The crystallization temperature at the exothermic peak increases from 1171 to 1212 K when the Na2O content increases from 0 to 0.6 mol. The crystalline phase is composed of spodumene crystallization when the Na2O content increases from 0 to 0.6 mol. The activation energy of spodumene crystallization decreases from 444.0 ± 22.2 to 284.0 ± 10.8 kJ mol-1 when the Na2O content increases from 0 to 0.4 mol. Moreover, the activation energy increases from 284.0 ± 10.8 to 446.0 ± 23.2 kJ mol-1 when the Na2O content increases from 0.4 to 0.6 mol. The crystallization parameters m and n approach 2, indicating that the surface nucleation and two-dimensional growth are dominant in (1 - x)Li2O-xNa2O-Al2O3-4SiO2 glasses.

原文English
頁(從 - 到)203-209
頁數7
期刊Materials Chemistry and Physics
123
發行號1
DOIs
出版狀態Published - 2010 九月 1

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

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