Cubic boron nitride based sintered material and its producing me

Details Cubic boron nitride based sintered material and its producing me Cubic boron nitride based sintered material and its producing me

1997-12-24

1999-09-07

Marcheschi, Michael

Compositions: ceramic

Ceramic compositions

Refractory

501127, 501 961, 501 984, 428704, 428698, 428403, 428404, C04B 3558

Patent

active

059487160

ABSTRACT:
The purpose of the present invention is to provide a cubic boron nitride based sintered material having excellent durability and capable of cutting at least spheroidal graphite cast iron at high speed and usable in a cutting tool having a long life, and a production method of this cubic boron nitride based sintered material. The present invention resides in a production method of a cubic boron nitride based sintered material characterized in that a mixing raw material is produced by mixing powder of Ti.sub.(1-x) Al.sub.x N(x=0.05.about.0.70) and the powder of a cubic boron nitride, and is next sintered. A compounding ratio of the above mixing raw material is preferably set such that this mixing raw material includes 10 to 90% of the above Ti.sub.(1-x) Al.sub.x N(x=0.05.about.0.70) by volume and 10 to 90% of the above cubic boron nitride by volume.

REFERENCES:
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patent: 5466642 (1995-11-01), Tajima et al.
patent: 5569862 (1996-10-01), Kuroyama et al.
patent: 5639285 (1997-06-01), Yao et al.
patent: 5691260 (1997-11-01), Suzuki et al.
patent: 5700551 (1997-12-01), Kukino et al.

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