Title:
【発明の名称】高硬度工具用焼結体およびその製造方法
Document Type and Number:
Japanese Patent JPH0621313
Kind Code:
B2
Abstract:
A sintered compact obtained by sintering a mixture containing about 50 to 75 percent by volume of cubic boron nitride and a residue of a binder under cBN-stable superhigh pressure conditions. The binder contains about 20 to 50 percent by weight of AI and one or more Ti compounds selected from a group of those expressed as TiNz, Ti(C,N)z, TiCz, (Ti,M)Cz, (Ti,M) (C,N)z and (Ti,M)Nz(where M indicates a transition metal of the group IVa, Va or Via of the periodic table excepting Ti, and z is within a range of 0.5 ≦ z ≦0.85). The atomic ratio of the content of Ti to that of the transition metal element of the group IVa, Va or Via excepting Ti in the binder is about 2/3 to 97/100, and the total tungsten concentration in the binder is about 4 to 40 percent by weight.
Inventors:
NAKAI TETSUO
GOTO MITSUHIRO
GOTO MITSUHIRO
Application Number:
JP29136186A
Publication Date:
March 23, 1994
Filing Date:
December 05, 1986
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES
International Classes:
C22C1/05; B01J3/06; B22F3/14; B22F3/15; C04B35/5831; C22C26/00; C22C29/14; C22C29/16; (IPC1-7): C22C29/16; B22F3/14; C22C1/05
Attorney, Agent or Firm:
Fukami Hisaro (2 outside)
Next Patent: REMOTE CONTROL TRANSMITTER