DIAMOND-CARBON SUBSTANCE AND METHOD OF ITS PRODUCTION Russian patent published in 1995 - IPC

FIELD: composite carbon materials. SUBSTANCE: diamond-carbon substance contains, wt.-% cube carbon, 30-75; roentgen-amorphous carbon phase, 10-15; crystalline carbon, the balance in the following quantitative proportions, wt. -% carbon, 84-89; hydrogen, 0.3-1.1; nitrogen, 3.1-4.3; oxygen, 2.0-7.1; noncombustible impurities, up to 5.0; and its surface contains methyl, carboxyl, quinone, lacton, ether and aldehyde functional groups. The substance is produced by detonating an explosive with a negative oxygen balance in a confined volume in a medium inert to carbon at a cooling rate of detonation products varying from 200 to 6000 deg/min. EFFECT: the substance reduces the coefficient of friction in lubricating oils, enhances the operating characteristics of rubber if used as a component of composite materials. 2 cl, 2 dwg, 2 tbl