Hard sintered body for tool

Details Hard sintered body for tool Hard sintered body for tool

1997-09-30

1999-12-14

Group, Karl

Compositions: ceramic

Ceramic compositions

Refractory

501 87, 501 961, 501 963, 264668, C04B 355835

Patent

active

060017570

ABSTRACT:
A hard sintered body for a tool contains 25 to 47 vol. % of cBN, 40 to 70 vol. % and especially less than 45 vol. % in total of a carbo-nitride, and a boride of Ti, and 2 to 20 vol. % in total of a boride and a nitride of Al. In the carbo-nitride of Ti, the ratio of carbon to nitrogen is in the range of 60:40 to 30:70. In this hard sintered body, cBN particles are bonded to each other through binder phases. The obtained hard sintered body for a tool is excellent in wear resistance and chipping resistance for high-speed cutting of hardened steel.

REFERENCES:
patent: 4334928 (1982-06-01), Hara et al.
patent: 5092920 (1992-03-01), Nakai et al.
patent: 5200372 (1993-04-01), Kuroyama et al.
patent: 5288297 (1994-02-01), Ringwood
patent: 5326380 (1994-07-01), Yao et al.
patent: 5328875 (1994-07-01), Ueda et al.
patent: 5466642 (1995-11-01), Tajima et al.
patent: 5569862 (1996-10-01), Kuroyama et al.

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