FIELD: chemistry.
SUBSTANCE: invention relates to production of heat-resistant polycrystalline diamond composites for production of cutting elements. On the boundary of division on the substrate of ceramic material, metal or cermet applied is heat-resistant diamond plate, which contains a layer of first impregnating material, selected from VIII group of periodic system of chemical elements or eutectic composition of said elements and placed between lower surface of said heat-resistant diamond plate and upper surface of said substrate. Material of coating from boron nitride, graphite or aluminium oxide is applied on the surface of said diamond plate, except the surface on the boundary of division. After that, applied on each other heat-resistant diamond plate and substrate are subjected to thermal cycle, consisting of heating, temperature support and cooling, ensuring transition of, at least, part of said impregnating material into liquid state for migration into heat-resistant diamond plate and into said substrate in the area of the boundary of division for their connection to each other. Said first impregnating material is used in amount, ensuring, at least, 90% of its transition into material of said substrate and plate.
EFFECT: production of working elements of metal-processing instrument, external part of which possesses high hardness, with internal one possessing high shock viscosity, is ensured.
41 cl, 10 dwg
