MIXTURE FOR PRODUCTION OF SUPERHARD COMPOSITION MATERIAL Russian patent published in 1997 - IPC

FIELD: powder metallurgy, particularly, mixture for production of superhard composite materials which are used in machine building by manufacturing of edge cutting instrument. SUBSTANCE: mixture has interlayer composition which comprises mixture of binder of copper intermetallic compound and titanium intermetallic compound CuTi₃, CuTi and aluminides of copper and titanium CuAl_DCu_gAl₄, TiAl, TiAl₃; abrasive mixture of powdered cubic boron nitride and tungsten-free solid alloy and layer of tungsten-free solid alloy. Said composition comprises, mas.%: binder mixture, 10-25; abrasive mixture, 25-30; tungsten-free solid alloy, 50-60. EFFECT: improved quality. 3 tbl