[5] [5] LUTPI H A, MOHAMAD H, ABDULLAH T K, et al. Effect of isothermal treatment on the structural, microstructure, and physiomechanical properties of Li2OAl2O3SiO2 glassceramic［J］. Journal of the Australian Ceramic Society, 2022, 58(1): 920.

[6] [6] GUO X Z, CAI X B, SONG J, et al. Crystallization and microstructure of Li2OAl2O3SiO2 glassceramics produced with environmentally acceptable fining agents［J］.Journal of the Chinese Ceramic Society(Eng), 2015, 2(2): 9197.

[10] [10] DRESSLER M, RDINGER B, DEUBENER J. Crystallization kinetics in a lithium alumosilicate glass using SnO2 and ZrO2 additives［J］. Journal of NonCrystalline Solids, 2014, 389: 6065.

[11] [11] SHAKERI M S. Fabrication, microstructure, and optical properties of nanocrystalline transparent LAST glass ceramics containing CeO2［J］. International Journal of Minerals, Metallurgy, and Materials, 2014, 21(4): 401407.

[12] [12] KLEEBUSCH E, PATZIG C, KRAUSE M, et al. The titanium coordination state and its temporal evolution in Li2OAl2O3SiO2 (LAS) glasses with ZrO2 and TiO2 as nucleation agentsa XANES investigation［J］. Ceramics International, 2020, 46(3): 34983501.

[16] [16] KLEEBUSCH E, PATZIG C, KRAUSE M, et al. The effect of TiO2 on nucleation and crystallization of a Li2OAl2O3SiO2 glass investigated by XANES and STEM［J］. Scientific Reports, 2018, 8: 2929.

[17] [17] ARVIND A, SARKAR A, SHRIKHANDE V K, et al. The effect of TiO2 addition on the crystallization and phase formation in lithium aluminum silicate (LAS) glasses nucleated by P2O5［J］. Journal of Physics and Chemistry of Solids, 2008, 69(11): 26222627.

[18] [18] WU J P, RAWLINGS R D, BOCCACCINI A R, et al. A glassceramic derived from high TiO2containing slag: microstructural development and mechanical behavior［J］. Journal of the American Ceramic Society, 2006, 89(8): 24262433.

[20] [20] PASK J A, TOMSIA A P. Formation of mullite from solgel mixtures and kaolinite［J］. Journal of the American Ceramic Society, 1991, 74(10): 23672373.

[21] [21] BRINKER C J, SCHERER G W, ROTH E P. Sol→gel→glass: ii. Physical and structural evolution during constant heating rate experiments［J］. Journal of NonCrystalline Solids, 1985, 72(2/3): 345368.

[22] [22] LEE G S, MESSING G L, DELAAT F G A. Crystallization of solgelderived lithium aluminosilicate (LAS) glass ceramic powders［J］. Journal of NonCrystalline Solids, 1990, 116(2/3): 125132.

[23] [23] LIU Z E, SUN Y H, DU X J, et al. Preparation and crystallization of ultrafine Li2OAl2O3SiO2 powders［J］. Journal of Materials Science, 1995, 30(2): 390394.

[26] [26] RIELLO P, CANTON P, COMELATO N, et al. Nucleation and crystallization behavior of glassceramic materials in the Li2OAl2O3SiO2 system of interest for their transparency properties［J］. Journal of NonCrystalline Solids, 2001, 288(1/2/3): 127139.

[28] [28] BEALL G H, PINCKNEY L R. Nanophase glassceramics［J］. Journal of the American Ceramic Society, 2004, 82(1): 516.

[29] [29] ZAWRAH M F, HAMZAWY E M A. Effect of cristobalite formation on sinterability, microstructure and properties of glass/ceramic composites［J］. Ceramics International, 2002, 28(2): 123130.

[38] [38] DOEHRING T, HARTMANN P, JEDAMZIK R, et al. Status of ZERODUR mirror blank production at SCHOTT［C］//Optics and Photonics 2005. Proc SPIE 5869, Optical Manufacturing and Testing VI, San Diego, California, USA. 2005, 5869: 513.

[39] [39] THORSTEN D. Forty years of zerodur mirror substrates for astronomy review and outlook［J］. Proc. SPIE, 2008: 70183.

[40] [40] HULL T, HARTMANN P, CLARKSON A R, et al. Lightweight highperformance 14 meter class spaceborne mirrors: emerging technology for demanding spaceborne requirements［C］//SPIE Proceedings, Modern Technologies in Space and Groundbased Telescopes and Instrumentation. San Diego, California, USA. SPIE, 2010: 77390.