US 2013/0199351 A1Published application

Surface-coated sintered body

AssigneeSumitomo Electric Hardmetal Corp.

InventorsMakoto Setoyama, Katsumi Okamura, Nozomi Tsukihara

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Abstract

A surface-coated sintered body includes a sintered body of cubic boron nitride (cBN) and a surface coating layer formed on a surface thereof, the sintered body of cBN containing 20 to 99.5% by volume of cBN and a binder, the surface coating layer including an adhesion layer and at least one hard coating layer, the adhesion layer being a metal layer containing at least W and being formed to cover a portion of the surface of the sintered body of cBN, the hard coating layer being formed to cover the sintered body of cBN and the adhesion layer, a ratio of cBN particles in contact with the adhesion layer to a total number of cBN particles in contact with the adhesion layer or the hard coating layer in the surface of the sintered body of cBN being 0.01 to 20%.

Claims12

Dependent claims

A surface-coated sintered body, comprising:

a sintered body of cubic boron nitride;
and
a surface coating layer formed on a surface thereof,
said sintered body of cubic boron nitride containing 20 to 99.5% by volume of cubic boron nitride and a binder,
said surface coating layer including an adhesion layer and at least one hard coating layer,
said adhesion layer being a metal layer containing at least W, and being formed to cover a portion of the surface of said sintered body of cubic boron nitride,
said hard coating layer being formed to cover said sintered body of cubic boron nitride and said adhesion layer,
a ratio of cubic boron nitride particles in contact with said adhesion layer to a total number of cubic boron nitride particles in contact with said adhesion layer or said hard coating layer in the surface of said sintered body of cubic boron nitride being 0.01 to 20%.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/877,372Filed 30 Aug 2011
Priority: JP 2010-26355026 Nov 2010
Published: 8 Aug 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification32 codes

B32B 9/041
Comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different…
B26D 1/0006
Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus…:…
B32B 5/16
Layered products characterised by the non- homogeneity or physical structure , i.e. comprising a fibrous, filamentary, particulate or foam…
C04B 41/009
After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone: characterised by the material treated