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Crystallization of CaO–MgO–Al2O3–SiO2 glass prepared by float process

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Abstract

CaO–MgO–Al2O3–SiO2 (CMAS) glass was prepared by float process. The effects of TiO2 and heat-treatment on properties and crystallization behaviors of float glasses were investigated by atomic force microscope, differential scanning calorimeter, X-ray diffraction, electron probe microanalyzer, field emission scanning electron microscope and viscosity test. The results showed that CMAS parent glasses produced by float process had a high surface flatness (Ra is less than 80.1 ± 0.1 nm) and low tin penetration (14 μm). When the concentration of TiO2 increased from 3.51 to 5.01 wt %, the glass transition temperature was decreased, and the crystallization temperature was shifted from 913 to 887°C using differential scanning calorimeter. Field emission scanning electron microscope images showed that phase separation was discovered in CMAS parent glass (containing 3.51 wt % TiO2) treated at 670°C. Diopside as a major crystalline phase was precipitated in CMAS glass-ceramics nucleated at 700°C for 30 min and followed by crystallization at 910°C for 30 min.

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Authors and Affiliations

  1. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan Hubei, 430070, P. R. China

    Weihong Zheng, Li Sheng, Hua Chao & Zhe Wang

  2. Glass and Technology Research Institute of Shahe, Shahe Hebei, P. R. China

    Weihong Zheng, Shaoyang Qian & Zhigang Peng

  3. The Center for Materials Research and Analysis, Wuhan University of Technology, Wuhan, Hubei, 430070, P. R. China

    Chunhua Shen

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  1. Weihong Zheng
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  2. Li Sheng
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  4. Zhe Wang
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Correspondence to Weihong Zheng.

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Zheng, W., Sheng, L., Chao, H. et al. Crystallization of CaO–MgO–Al2O3–SiO2 glass prepared by float process. Glass Phys Chem 43, 347–356 (2017). https://doi.org/10.1134/S1087659617040186

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  • DOI: https://doi.org/10.1134/S1087659617040186

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