Carbon composition production process

摘要

PCT No. PCT/SU91/00135 Sec. 371 Date Jul. 22, 1993 Sec. 102(e) Date Jul. 22, 1993 PCT Filed Jul. 3, 1991 PCT Pub. No. WO93/01129 PCT Pub. Date Jan. 21, 1993.The present invention relates to production of superhard materials. A carbon composition contains 18-38 wt. % of diamond having particle size of 40-120 ANGSTROM and graphite to make up 100 wt. % having particle size of 200-1000 ANGSTROM . A process for producing the carbon composition consists in detonating a carbon-containing explosive having a negative oxygen balance, in a cooling medium containing 40-60 vol. % of carbon dioxide gas, not more than 2 vol. % of free oxygen, and a neutral gas to make up 100 vol. %. The present carbon composition will find predominant application as an abrasive for superfinish polishing.