Crystallization kinetics of new heavy metal oxide glasses within the Sb2O3-Na2O-WO3-PbO system
CERAMICS INTERNATIONAL, cilt.43, ss.491-497, 2017 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 43
- Basım Tarihi: 2017
- Doi Numarası: 10.1016/j.ceramint.2016.09.184
- Dergi Adı: CERAMICS INTERNATIONAL
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.491-497
- Anahtar Kelimeler: Heavy metal oxide glasses, Senarmontite, Crystallization kinetics, Non-isothermal methods, DIFFERENTIAL THERMAL-ANALYSIS, OPTICAL-PROPERTIES, NONISOTHERMAL CRYSTALLIZATION, SPECTROSCOPIC PROPERTIES, ANTIMONITE GLASSES, CHALCOGENIDE GLASS, ACTIVATION-ENERGY, CRYSTAL-GROWTH, PHOTOLUMINESCENCE, CERAMICS
- Yıldız Teknik Üniversitesi Adresli: Evet
Özet
Crystallization kinetic studies of new quaternary antimonite glasses within the Sb2O3-Na2O-WO3-PbO system were performed by non-isothermal methods using differential scanning calorimetry (DSC), X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. The kinetic parameters n and m which determine crystallization reaction mechanism in glasses were obtained using experimental values of the crystallized volume fraction, x, by applying Ozawa method. Values of n and m were found as 1 indicating surface crystallization which was confirmed by SEM investigations. The values of crystallization activation energy were calculated in the range of 234-272 kJ/mol by using seven different theoretical models. The calculated crystallization activation energy values were associated with the crystallization of cubic crystalline senarmontite phase of Sb2O3.