C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 35/5831 (2006.01)
Patent
CA 2217175
A hard sintered body for a tool contains 25 to 47 vol. % of cBN, 40 to 70 vol. % 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 product is a hard sintered body for a tool which is excellent in wear resistance and chipping resistance for high-speed cutting of hardened steel.
Fukaya Tomohiro
Nakai Tetsuo
Bell G. Ronald
Sumitomo Electric Industries Ltd.
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