PRODUCTION OF BORON CARBIDE/CARBON COMPOSITE-BASED NEUTRON SHIELDING MATERIAL

摘要

PURPOSE: To produce a boron carbide/carbon composite material excellent in neutron absorption performance and mechanical and thermal properties such as bending strength and thermal conductivity at a low cost. ;CONSTITUTION: Raw materials consisting essentially of 60-85vol.% boron carbide powder and 15-40vol.% binder pitch are mixed and the resultant mixture is then hot pressed, formed at 480-600°C temperature, then burned under no pressurizing, further impregnated with pitch under reduced pressure and subsequently reburned.;COPYRIGHT: (C)1994,JPO&Japio