PRODUCTION OF SINTERED MATERIAL HAVING HIGH TOUGHNESS

摘要

PURPOSE:To obtain a sintered material having high toughness, in a short time in high production efficiency, using a pressurized self-combustion sintering proc ess, by dispersing a rod like or fibrous component resistant to fusion and decom position by ignition reaction into the formed raw material. CONSTITUTION:Raw materials (e.g. a mixture of metallic titanium powder and carbon black) necessary for the production of a sintered article by pressu rized self-combustion sintering process are mixed with a rod like or fibrous component (e.g. silicon carbide whisker) resistant to fusion and decomposition in the combustion reaction. The mixture is molded to obtain a molded article containing dispersed rod-like or fibrous component. The molded article is ignited under pressure to start the combustion reaction to effect the simultaneous synthe sis and sintering by the heat generated by the combustion process to obtain the objective sintered article having high toughness. The energy of the produc tion process can be remarkably saved and the production time can be shortened.