Refractories ›› 2025, Vol. 59 ›› Issue (2): 149-154.DOI: 10.3969/j.issn.1001-1935.2025.02.011

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Research progress on sol-gel method for preparing Al2O3-SiO2 aerogels and composites

Zhang Huangshuai, Zhu Zhenting, Yang Zihao, Chen Zhe, Ma Yu, Zhang Hang   

  1. First author’s address:School of Energy Power and Mechanical Engineering,North China Electric Power University,Beijing 102206,China
  • Received:2024-07-31 Online:2025-04-15 Published:2025-04-14

溶胶-凝胶法制备Al2O3-SiO2气凝胶及其复合材料的研究进展

张皇帅1), 朱震庭1), 杨子豪1), 陈哲2), 马毓3), 张航2)   

  1. 1)华北电力大学 能源动力与机械工程学院 北京 102206
    2)中国科学院工程热物理研究所 北京 100089
    3)北京航空航天大学 北京 100191
  • 通讯作者: 张航,男,1984年生,博士,研究员。E-mail:zhanghang@iet.cn
  • 作者简介:张皇帅:男,1999年生,硕士研究生。E-mail:huangshuai_zhang@outlook.com
  • 基金资助:
    国家自然科学基金资助项目(52201166)。

Abstract: The research progress on various sol-gel processes for preparing Al2O3-SiO2 aerogels in recent years was reviewed.The influence of drying methods and Al/Si molar ratios on the thermal stability of the aerogels under extremely high temperatures,as well as the doping strategy of the reinforcing phase in composite materials were deeply analyzed.The future development directions were prospected.

Key words: Al2O3-SiO2 aerogels, high-temperature thermal stability, sol-gel method, high-temperature phase transformation, composite reinforcement

摘要: 综述了近年来采用溶胶-凝胶法制备Al2O3-SiO2气凝胶的多种工艺研究进展,深入分析气凝胶的干燥方法和Al、Si物质的量比对气凝胶在极端高温下热稳定性的影响,以及复合材料中增强相的掺杂策略,并对未来发展方向进行展望。

关键词: Al2O3-SiO2气凝胶, 高温热稳定性, 溶胶-凝胶法, 高温相变, 复合增强

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