Coated particles for the production of diamonds and processes for the production of diamond grinding bodies for sawing

摘要

A coated particle for synthesizing diamond comprises; a single crystal of fine diamond particle (1) being coated with at least one layer (2) which contains at least one kind of solvent metal powder for synthesizing diamond and/or at least one kind of solvent metal powder with organic bonding material. Diamond abrasive particles for sawing are produced by a process which comprises steps of : coating fine diamond particles (1) with at least one layer (2) which contains at least one kind of solvent metal powder for synthesizing diamond and/or at least one kind of solvent metal powder with organic bonding material, filling a molding with said coated fine diamond particles, compacting, arranging a compact in a synthesizing vessel, heating said compact to a temperature above a solvent metal-graphite melting point with a pressure condition in which diamond is thermodynamically stable, and recovering said diamond abrasive particles. IMAGE