SILICON CARBIDE WITH SUPER ENVIROMENTAL RESISTANCE

With the development of science and technology, the requirement for material properties becomes higher and higher . It is composite materials that will play an increasingly important role in the 21st century. Silicon carbide (SiC) is known for its good mechanical properties, thermal stability and excellent resitance against environment, and is recognized as a principle candidate substrate for high temperature structural materials. Simultaneously, it can be applied in the fields such as reinforced material, high temperature catalyst supports, abrasive material and so on. SiC is finding increasing use both in military and non military fields as well. The research on siliconization of material becomes the hot point at present. In this paper,the preparation of SiC by different routes and methods,its chemical and physical properties and application in different fields are reviewed.