关键词: 泡沫碳化硅陶瓷, 制备, 特征, 应用

Abstract: In addition to a high porosity and specific area, foam SiC ceramic materials possess other characteristics, for example, low density, good thermal, mechanical, electrical and acoustical properties. All the characteristics make them attractive for a wide range of applications in chemical industry, machinery, bio-field and environmental protection. In this paper, several main fabrication techniques of foam SiC ceramic materials are summarized, including powder sintering, solid state reaction sintering, silicon resin pyrolysis and chemical vapor deposition. Some excellent properties of SiC foams, for example, special three-dimensional reticular structure, fluid resistance, oxidation resistance, ability of absorbing microwave are reviewed. Examples of application for the foam materials, such as catalysis, filtration, biological and so on are introduced. In addition, application of SiC foams as column internals for chemical industry is presented. Higher demand for SiC foams requires not only integration and renovation of current technologies, but also development of their potential advantages.

Key words: foam SiC ceramic , fabrication techniques, properties, application