Process for production of silicon-carbide-coated carbon base material, silicon-carbide-coated carbon base material, sintered (silicon carbide)-carbon complex, ceramic-coated sintered (silicon carbide)-carbon complex, and process for production of sintered (silicon carbide)-carbon complex

摘要

Produced is a silicon carbide-coated carbon base material in which a silicon carbide coating is densely and uniformly formed on the surface of a carbon base material, such as graphite. A production process includes the steps of: preparing a carbon base material the surface of which has basal plane sites of an SP2 carbon structure with no dangling bond and edge plane sites of an SP2 carbon structure with a dangling bond; and reacting the surface of the carbon base material with SiO gas in an atmosphere at a temperature of 1400° C. to 1600° C. and a pressure of 1 to 150 Pa to form silicon carbide, whereby the carbon base material coated with silicon carbide is produced.

主权项

1. A pressure sintered silicon carbide/carbon complex obtained by pressure sintering carbon base material particles coated with a layer of silicon carbide,
wherein the relative density of the pressure sintered silicon carbide/carbon complex is 90% to 100% and the total content of Al, Be, B, and Se therein is below 0.1% by weight; and wherein a silicon carbide interfacial layer is disposed around the carbon base material particles and provided continuously in the form of a three-dimensional network.