Crystallization kinetics of fly ash-based glasses

Erol Taygun M. M., Kucukbayrak S., Ersoy-Mericboyu A., Öveçoğlu M. L.

EURO CERAMICS VIII, PTS 1-3, cilt.264-268, ss.1895-1898, 2004 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 264-268
  • Basım Tarihi: 2004
  • Doi Numarası: 10.4028/www.scientific.net/kem.264-268.1895
  • Dergi Adı: EURO CERAMICS VIII, PTS 1-3
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED)
  • Sayfa Sayıları: ss.1895-1898
  • Anahtar Kelimeler: glass, glass-ceramic, fly ash, crystallization kinetics, NUCLEATION, GROWTH
  • İstanbul Teknik Üniversitesi Adresli: Hayır

Özet

The crystallization behavior and kinetics of fly ash-based glasses were investigated by using DTA and SEM techniques. The crystal growth activation energies were determined by using the Kissinger and Matusita-Sakka equations as 200 and 283 kJ/mol, respectively. The Avrami exponent (n) was calculated by means of Augis-Bennet and Ozawa equations. Calculated values indicated that the crystallization mechanism was a three dimensional bulk process. This result is in well agreement with the cross-sectional SEM investigations.