METHOD FOR PRODUCTION OF SUPERHARD DENSE MATERIAL Russian patent published in 1996 - IPC

FIELD: manufacturing of cutting, polishing and abrasive tools. SUBSTANCE: mixture of powders of superhard material with one of the metal from group of ferrum (its quantity being 3-90 vol %) being preliminary pressed as superdisperse monocrystal powder having particles 100-1000 in size are placed into device of superhigh pressure. Said powder is affected with impact wave having amplitude 1-25 GPa. Said powder mixture may contain at least one infusible inorganic additive (its quantity being not more 40 vol %). Mentioned above affection with impact waves is carried out through transmitting medium; S;O₂ or Al₂O₃ or KCl, or NaCl, or KBr, or RbCl may be used as said medium. Secondary affection with impact wave having amplitude 1-15 GPa may be carried out. Thus treated material is affected by plastic deformation, the process takes place at 600-900 C, velocity of said deformation is 10^-5- 10^-1C^-1. EFFECT: improves quality of desired product, improves efficiency of the method. 5 cl, 3 dwg