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Kinetics of crystallization processes in some glass ceramic products

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Abstract

The paper presents the kinetic study of the crystallization processes which take place in basalt glasses containing variable amount of nucleation agent (CaF2, 310%). The activation energies have been calculated using Kissinger's equation and verified with the Ozawa-Flynn-Wall equation. In this order, the DTA curves have been registered with different heating rates, between 4 and 20 degrees/min. A correlation equation between the activation energy and the amount of nucleation agent (% of CaF2) was established. By X-ray diffraction it was proved that the crystalline phase formed in the crystallization process represents a pyroxenic solid solution, Ca(Mg,Fe)SiO3.

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Authors and Affiliations

  1. Faculty of Industrial Chemistry and Environmental Engineering, 'Politehnica' University Timięoara, 1, P-ťa Victoriei No. 2, 1900, Timişoara, Romania

    P. Păcurariu, R. I. Lazău & I. Lazău

  2. Faculty of Pharmacy, University of Medicine and Pharmacy 'Victor Babeę', P-ťa E. Murgu no.2, 1900, Timięoara, Romania

    D. Liťă

  3. PROCEMA S. A, Calea źagului nr. 104, 1900, Timięoara, Romania

    G. Kovacs

Authors
  1. P. Păcurariu
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  2. D. Liťă
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  3. R. I. Lazău
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  4. G. Kovacs
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  5. I. Lazău
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Păcurariu, P., Liťă, D., Lazău, R.I. et al. Kinetics of crystallization processes in some glass ceramic products. Journal of Thermal Analysis and Calorimetry 72, 823–830 (2003). https://doi.org/10.1023/A:1025062030457

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  • DOI: https://doi.org/10.1023/A:1025062030457

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