Patent ID: 6265337
Filing Date: 2001-07-24
Classification: C04B,C22C

Abstract:
A high strength sintered body comprising:a high pressure form boron nitride in the range of 20 to 70% by volume;a first binding material surrounding the high pressure form boron nitride with a thickness in the range of 5 nm to 300 nm, the first binding material comprising at least one of nitride and boride of Ti and Al; anda second binding material of the balance comprising at least one selected from the group consisting of nitride, carbide, carbonitride, boride and oxide of Al and transition metals belonging to the group 4a, 5a and 6a in the periodic table and mutual solid solution thereof;wherein the ratio X/Y is not less than 1 supposing that X is the amount of Al contained per unit volume in the first binding material and Y is the amount of Al contained per unit volume in the second binding material.