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Crystallization Behavior and Kinetics of Lithium Aluminosilicate Glasses with Various Li2O Contents

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Abstract

The crystallization behavior of Li2O-Al2O3-SiO2 glasses with various concentration of Li2O were investigated by DSC, XRD, and FE-SEM. The h/l-quartz s.s. is the main crystalline phase for all of the glass with the heat treatment of 720 °C/3 h+800°C/1.5 h while the crystallinity and crystal size increase with the increase of Li2O contents. Due to the negative thermal expansion coefficient of h/l-quartz s.s., the thermal expansion coefficient of glass-ceramics decreases with the increasing of Li2O contents. When the Li2O content is 9mol%, the near-zero CTE20–700 °C= −0.09 × 10−6 °C−1 is obtained upon the heat treatment of 720 °C/3 h+800 °C/1.5 h. The crystallization activation energy of the glass with 9mol% Li2O is about 351 kJ/mol, and the crystallization mechanism is volume crystallization.

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Authors and Affiliations

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

    Jianjun Han  (韩建军), Wei Hong, Qianchen Wang, Jing Wang & Wenkai Gao

  2. State Key Laboratory of Special Glass, Chengmai, 571924, China

    Hong Jiang  (姜宏)

  3. AVIC (Hainan) Special Glass Technology Co. Ltd., Chengmai, 571924, China

    Jianxiong He

Authors
  1. Jianjun Han  (韩建军)
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  2. Wei Hong
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  3. Hong Jiang  (姜宏)
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  4. Jianxiong He
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  5. Qianchen Wang
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  6. Jing Wang
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  7. Wenkai Gao
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Corresponding author

Correspondence to Hong Jiang  (姜宏).

Additional information

Funded by the Opening Project of State Key Laboratory of Special Glass and the National Natural Science Foundation of China (No. 52072278)

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Han, J., Hong, W., Jiang, H. et al. Crystallization Behavior and Kinetics of Lithium Aluminosilicate Glasses with Various Li2O Contents. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 36, 243–247 (2021). https://doi.org/10.1007/s11595-020-2401-2

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  • DOI: https://doi.org/10.1007/s11595-020-2401-2

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