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JOURNAL OF SYNTHETIC CRYSTALS ›› 2023, Vol. 52 ›› Issue (12): 2135-2145.

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Development Status and Application of Ultra-Low Expansion Glass-Ceramics

ZHAO Chunxia1,2, JIANG Xinzhao1,2, ZHANG Wei1,2, LIU Jie1,2, FAN Shigang1,2, HE Can1,2   

  1. 1. Sinoma Synthetic Crystals Co., Ltd., Beijing 100018, China;
    2. Beijing Sinoma Synthetic Crystals Co., Ltd., Beijing 100018, China
  • Received:2023-10-07 Online:2023-12-15 Published:2023-12-26

Abstract: Ultra-low expansion glass-ceramics is a kind of glass-ceramics with β-quartz solid solution as main crystal phase precipitated in parent glass after strictly controlled crystallization on the basis of Li2O-Al2O3-SiO2 system glass. Because of its low coefficient of thermal expansion, excellent thermal stability, chemical stability and mechanical properties, ultra-low expansion glass-ceramics have been widely used in many fields. In this paper, the composition, preparation method, domestic and international research process and development status, application of ultra-low expansion glass-ceramics are reviewed, and the existing problems in the production of ultra-low expansion glass-ceramics and the gap between the domestic ultra-low expansion glass-ceramics and the top international products, and the development direction of domestic ultra-low expansion glass-ceramics in the future are pointed out.

Key words: Li2O-Al2O3-SiO2 system glass, ultra-low expansion, β-quartz solid solution, glass-ceramics, controlled crystallization

CLC Number: