Non-isothermal crystallization kinetics of Fe2O3–CaO–SiO2 glass containing nucleation agent P2O5/TiO2
- Authors: Li B.1, Wang Y.1, Luo W.1, Li J.1, Li J.2
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Affiliations:
- Department of Material Chemistry
- Orthopedic Department
- Issue: Vol 62, No 2 (2017)
- Pages: 260-264
- Section: Nanomaterials, Ceramics
- URL: https://journals.rcsi.science/1063-7745/article/view/190806
- DOI: https://doi.org/10.1134/S1063774517020080
- ID: 190806
Cite item
Abstract
Fe2O3–CaO–SiO2 glass ceramics containing nucleation agent P2O5/TiO2 were prepared by sol-gel method. The samples were characterized by X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The activation energy and kinetic parameters for crystallization of the samples were calculated by the Johnson-Mehi-Avrami (JMA) model and Augis-Bennett method according to the results of DSC. The results showed that the crystallization mechanism of Fe2O3–CaO–SiO2 glass, whose non-isothermal kinetic parameter n = 2.3, was consistent with surface crystallization of the JMA model. The kinetics model function of Fe2O3–CaO–SiO2 glass, f(α) = 2.3(1–α)[–ln(1–α)]0.57, was also obtained. The addition of nucleation agent P2O5/TiO2 could reduce the activation energy, which made the crystal growth modes change from onedimensional to three-dimensional.
About the authors
Bin Li
Department of Material Chemistry
Author for correspondence.
Email: stra_ceo@163.com
China, Huzhou, 313000
Yongya Wang
Department of Material Chemistry
Email: stra_ceo@163.com
China, Huzhou, 313000
Wenqin Luo
Department of Material Chemistry
Email: stra_ceo@163.com
China, Huzhou, 313000
Jingfen Li
Department of Material Chemistry
Email: stra_ceo@163.com
China, Huzhou, 313000
Jianyou Li
Orthopedic Department
Email: stra_ceo@163.com
China, Huzhou, 313000