Crystallization kinetics of the aluminum silicate glass fiber

The crystallization behavior and kinetics of aluminum silicate glass fiber (Al2O3 79 wt.%) have been investigated using a non-isothermal DTA method. The precipitation phase of the aluminum silicate glass fiber is mullite, the glass transformation temperature is 1451∼1472 K, the crystallization reaction begins to occur from 1516∼1536 K, and the temperature at maximum precipitation is 1538∼1568 K under the experimental conditions. The crystallization kinetic parameters were investigated using several kinetic models and the optimal kinetic parameters for crystallization process of the aluminum silicate glass fiber are Ee=652 KJ/mol, n=1.61, k0=4.98×1019 (s−1).