Abstract
The Co2O3 doped MgO-Al2O3-SiO2-B2O3 (MASB) glass-ceramics were successfully fabricated by traditional melt quenching method and the following heat treatment. The effect of Co2O3 addition on crystallization behavior, glass networks, microstructure and physical properties was investigated by differential scanning calorimetry (DSC), X-ray diffraction (XRD), Fourier transform infrared absorption spectra (FTIR) and scanning electron microscopy (SEM) measurements. The results show that the metastable phase μ-cordierite and α-cordierite precipitated from the parent glass during the thermal treatment process. With the increase of Co2O3 content, the crystallization tendency of the parent glass increased, and the addition Co2O3 favored the transformation from μ-cordierite to α-cordierite. Meanwhile, the grain size of glass-ceramics increased obviously, Simultaneously, the mechanical strength of glass-ceramics increased first and then decreased, while the thermal expansion coefficient decreased. Glass-ceramic with excellent thermal and physical properties were prepared by adding 0.1 mol% Co2O3 content and then crystallizing it at 1020 ∘C for 3 h.
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Acknowledgments
This work has been supported by the Project of Technology Promotion and Industrialization for key basic Materials in China (No. 2017YFB0310200) and the National Nature Science Foundation of China(NO51672310, NO51272288).
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Tang, W., Zhang, Q., Luo, Z. et al. The Effects of Co2O3 Addition on Crystallization, Microstructure and Properties of Cordierite-Based Glass-Ceramics. Silicon 10, 2123–2128 (2018). https://doi.org/10.1007/s12633-017-9742-7
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DOI: https://doi.org/10.1007/s12633-017-9742-7