耐高温氧化铝气凝胶研究进展  

Research Progress in Highly Thermally Stable Alumina Aerogels

作　　者：温培刚[1] 巢雄宇 袁武华[2] 顾立[2] WEN Peigang CHAO Xiongyu YUAN Wuhua GU Li(Beijing Institute of Aeronautical Materials, China Aviation Industry Corporation, Beijing 100095 College of Materials Science and Engineering, Hunan University, Changsha 410082)

机构地区：[1]中国航空工业集团公司北京航空材料研究院,北京100095 [2]湖南大学材料科学与工程学院,长沙410082

出　　处：《材料导报》2016年第15期51-56,共6页Materials Reports

摘　　要：在众多气凝胶中,氧化铝气凝胶不仅热导率低,而且高温稳定性好(长期使用温度高达950℃),在高温催化、高温隔热等领域是一种理想的材料。但在工作温度超过1000℃时,氧化铝气凝胶的使用受到限制。简要介绍了氧化铝气凝胶的制备工艺,分析了氧化铝气凝胶的失效理论,并对其耐高温性能的改善进行了探讨。Alumina aerogel have better thermal insulation properties and high thermal stability at high temperatures than common silica aerogel and would be a promising candidate for high-temperature thermal superinsulations and catalysts.But if working temperature is up to 1000℃,the use of alumina aerogel is restricted.This paper briefly introduces the preparation methods and sintering theory of alumina aerogel,and discusses the ways to improve high thermal stability.

关 键 词：氧化铝 气凝胶 烧结 耐高温 

分 类 号：TB34[一般工业技术—材料科学与工程]