METHOD OF PRODUCING OF SUPERHARD COMPOSITE MATERIALS Russian patent published in 1994 - IPC

Abstract SU 1372954 A1

FIELD: composite materials. SUBSTANCE: method involves the steps of: subjecting a mixture of powdered cubic boron nitride with powdered metallic binder with a grain size less than 1 micron with powdered solid alloy with granularity of 1-10 micron and fibrous aluminium oxide crystals to pressing under pressure of 5-10 kbars, degassing the pressed blank in vacuum of 10^-3-10^-4 tors and further pressing under pressure of 15-20 kbars at melt temperature of the metallic binder with isothermic maintaining for 0.5-1.5 hours, cooling the blank up to a room temperature and irradiating with gamma-quanta with a dose of 10⁴-10⁷ roentgen. EFFECT: enhanced cutting properties of superhard material in machining nickel-based alloys. 1 tbl

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SU 1 372 954 A1

Authors

Kapustin A.I.

Dul'Nev B.V.

Pogonjalin Ju.A.

Semerchan A.A.

Nuzhdina S.G.

Dates

1994-07-15—Published

1985-11-13—Filed