Title:
CUTTING TOOL MADE OF HIGH-STRENGTH AND HIGHLY TOUGH CUBIC SYSTEM BORON NITRIDE BASE SUPERHIGH PRESSURE SINTERED MATERIAL
Document Type and Number:
Japanese Patent JPH08197305
Kind Code:
A
Abstract:
PURPOSE: To provide a cutting tool made of a high-strength and highly tough CBN base superhigh pressure sintered material.
CONSTITUTION: A cutting tool is formed of a combination phase where the proportion of CBN grains dispersed-distributed on a base is 40 to 65vol.% and the remaining base has a skeleton-structure. Further, the combination phase is made of a CBN base superhigh pressure sintered material having a composition composed of 5 to 15% reaction productive phase formed of 5 to 18vol.% of Al2O3, AlB2, AlN, and TiB2, and TiC and inevitable impurities the remainder, and a structure where the reactic productive phases are dispersed-distributed in a mixed phase of Al2O3 grains and TiC grains.
Inventors:
YAMAMOTO KAZUO
Application Number:
JP3008495A
Publication Date:
August 06, 1996
Filing Date:
January 26, 1995
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP
International Classes:
B23B27/14; B23P15/28; C04B35/583; (IPC1-7): B23B27/14; B23P15/28; C04B35/583
Attorney, Agent or Firm:
Kazuo Tomita (1 person outside)