Patent ID: 8609060
Filing Date: 2013-12-17
Classification: B22F,B82Y,C01B,C01P,C09C,H01L,H05H

Abstract:
1. A method of producing carbon coated nano- and micron-scale particles, said method comprising the steps of: entraining precursor particles in an aerosol gas; providing a carbon-containing gas; providing a substantially nonreactive plasma gas that consists of a noble gas such as argon; mixing the aerosol gas, the carbon-containing gas, and the plasma gas proximate to a torch; bombarding the mixed gases with an energy source sufficient to generate a hot zone of plasma vapor from said gases wherein the entrained particles atomize and the carbon-containing gas disproportionates; directing the vapor admixture away from the hot zone whereupon cooling, the various species within said vapor segregate to produce particles comprising a precursor particle core and an outer shell of carbon; and collecting either one or both of the resulting carbon-coated nano- or micron-scale particles.