BORON CARBIDE/CARBON FIBER COMPOSITE SINTERED COMPACT FOR WALL MATERIAL OF NUCLEAR FUSION REACTOR

摘要

PURPOSE:To obtain a wall material for a nuclear fusion reactor having remarkably improved heat conductivity and thermal shock resistance without losing the conventional characteristics by combining boron carbide with carbon fibers in a specified ratio and sintering them. CONSTITUTION:This composite sintered compact for the wall material of a nuclear fusion reactor consists of 90-50vol.% boron carbide and 10-50vol.% carbon fibers. In this composite sintered compact, the carbon fibers are preferably oriented so that the angle between the fibers and the direction of heat conduction is regulated to <=+ or -30 deg.. The aspect ratio of the carbon fibers is preferably >=100.