Patent ID: 7517491
Filing Date: 2009-04-14
Classification: C04B

Abstract:
1. A process for making a high-density component, comprising: shaping boron carbide powder without sintering additives into a component having at least a 60% green density; heating a furnace to about 1100 to 1400° C. for about 30 to 120 minutes, wherein the furnace includes the component, and wherein the furnace includes a H purging the furnace for about 120 to 480 minutes in a vacuum at a temperature from about 1100 to 1400° C.; and substantially sintering the component by pressureless sintering by heating the furnace to about 2300 to 2400° C. at about 50 to 150° C./min to form a sintered component having at least a 93% relative density (RD) and a Vickers hardness of about at least 2000 kg/mm