COATED ABRASIVE MATERIALS AND PRODUCTION METHOD THEREOF Russian patent published in 2011 - IPC C09C1/68 C09K3/14 B82B1/00 B82B3/00 C01B31/06 C01B21/64 

FIELD: chemistry.

SUBSTANCE: when making abrasive tools, several super-hard sub-micrometre or nanosized diamond particles or cubic boron nitride or combination of these materials and having vitreophilic surfaces which can form chemical bonds with oxides are used. A coating of oxide precursor material is deposited on the particles and thermal treatment is then carried in order to dry and clean the coating. The coatings are selected from a group comprising nitrides of titanium, vanadium, niobium, tantalum, molybdenum and tungsten or carbides of vanadium, niobium, tantalum, molybdenum and tungsten, an anatase phase of titanium dioxide, a rutile phase of titanium dioxide, tetragonal zirconium dioxide, monoclinic zirconium dioxide, zirconium dioxide, stabilised with yttrium oxide or magnesium oxide, transition structures or an alpha-phase of aluminium oxide or oxides of vanadium, niobium, tantalum, hafnium, molybdenum and tungsten, quartz glass.

EFFECT: invention enables coating of sub-micrometre or nanosized abrasives.

35 cl, 6 dwg, 2 tbl, 15 ex