Huseyin Ozkan Toplan and Nil Toplan
Sakarya University, Turkey
Posters & Accepted Abstracts: Mod Chem appl
The MgO-Al2O3-SiO2-TiO2 glass system was prepared by melting method. The crystallization behavior and crystallization kinetics of a sample with glass ceramic composition were examined. DTA and XRD analysis revealed the crystallization of Ca0.965Mg2Al16O27 cordierite (Mg2Al4Si5O18) and Fe2TiO5 phases. The activation energy for the crystallization of cordierite phase has been evaluated, and the crystallization mechanism has been studied by applying DTA measurements performed at various heating rates. The results indicate that the dominant crystallization mechanism for this system is bulk crystallization dominated by three-dimensional growth. The average calculated values of crystallization and viscous flow for the formation of crystal phases from the glass matrix were measured to be 330 kJmol-1 and 377 kJmol-1, respectively.
Hüseyin Özkan Toplan has completed his PhD in 1998 from Sakarya University. He has been working at the Sakarya University, Metallurgy & Materials Engineering, as an academic staff since 1990. He has attended more than 35 national and international conferences. He has published more than 30 papers in reputed journals and his publications have been cited more than 150.