Non-isothermal crystallization kinetics of Fe2O3–CaO–SiO2 glass containing nucleation agent P2O5/TiO2


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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.

Sobre autores

Bin Li

Department of Material Chemistry

Autor responsável pela correspondência
Email: stra_ceo@163.com
República Popular da China, Huzhou, 313000

Yongya Wang

Department of Material Chemistry

Email: stra_ceo@163.com
República Popular da China, Huzhou, 313000

Wenqin Luo

Department of Material Chemistry

Email: stra_ceo@163.com
República Popular da China, Huzhou, 313000

Jingfen Li

Department of Material Chemistry

Email: stra_ceo@163.com
República Popular da China, Huzhou, 313000

Jianyou Li

Orthopedic Department

Email: stra_ceo@163.com
República Popular da China, Huzhou, 313000

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