Composite of silicon carbide and carbon and method of making the same

摘要

This invention relates to a composite of silicon carbide and carbon. This invention also relates to its manufacturing method. An obtained composite is used as heat resistant, wear resistant or chemical resistant materials. The object of this manufacturing method is to form a deep layer of silicon carbide and carbon in the surface of a carbon base by a simple process of causing a silicon containing material to penetrate into and react with the carbon block. Further object of this invention is to produce a compound in whole comprised of silicon carbide and carbon if the carbon block is 20 mm or below in thickness. To this end, according to this forming method a carbon block having a lattice constant c of 6.708 ANGSTROM to 6.900 ANGSTROM or below and a density of 1.3 g/cm3 to 1.7 g/cm3 or below is formed into a desired shape, and molten silicon containing material is caused to penetrate into and react with the carbon block thereby to obtain a surface layer composed to silicon carbide and carbon to a surface depth of 20 mm or below and having substantially the same shape as the carbon block.