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  1. The effects of CaF2 in mica glass-ceramics
The effects of CaF2 in mica glass-ceramics
1207 viewed

The effects of CaF2 in mica glass-ceramics

Ghasemzadeh, M

The effects of CaF2 in mica glass-ceramics

Ghasemzadeh, M ; Sharif University of Technology | 2013

1207 Viewed
  1. Type of Document: Article
  2. DOI: 10.4028/www.scientific.net/DDF.334-335.258
  3. Publisher: 2013
  4. Abstract:
  5. Different concentrations of CaF2 were incorporated in mica glass-ceramics to evaluate their effects on the crystallization and microstructure. The kinetics of phase transformations, and the microstructures of the final crystalline phase were found to be dependent on the concentration of nucleation agents. The results showed that CaF2 in high concentration had a synergistic effect and enhanced the formation of interlocked mica crystals. Non-isothermal DTA experiments showed that the crystallization activation energies of base glasses were changed in the range of 235-405 kJ/mol, while the crystallization activation energies of samples with addition of CaF2 were changed in the range of 419-747 kJ/mol
  6. Keywords:
  7. Crystallization kinetics ; Glass ceramics ; Machinability ; Crystalline phase ; Crystallization activation energy ; Kinetics of phase transformation ; Mica crystals ; Nonisothermal ; Nucleation agents ; Phlogopite ; Synergistic effect ; Activation energy ; Diffusion in solids ; Microstructure ; Mica
  8. Source: Defect and Diffusion Forum ; Volume 334-335 , 2013 , Pages 258-263 ; 10120386 (ISSN) ; 9783037856628 (ISBN)
  9. URL: http://www.scientific.net/DDF.334-335.258