YANG Chunyan, LU Miao, LIU Peisheng

(Key Laboratory of Beam Technology and Material Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China)

Abstract: Porous ceramic materials achieve heat insulation by the low thermal conductivity of gases in the closed pores within the ceramic matrix and the ceramic materials’ own low thermal conductivity. They have been widely used in many fields, such as construction, aerospace, and warehousing, machinery. This paper introduced the manufacture methods, insulation mechanism, research situation and the methods of studying the conductive process of porous insulating ceramics.

Key words: porous ceramics; effectively thermal conductivity coefficient; heat insulation