Abstract: A cemented carbide may include a hard phase including W and C, and a binder phase including cubic Co. The binder phase may include Zr. The Co may include a lattice constant of more than 3.5575 ? and not more than 3.5600 ?. A coated tool may include a coating layer located on a surface of the cemented carbide. A cutting tool may include a holder that is extended from a first end toward a second end and may include a pocket on a side of the first end, and the coated tool located in the pocket.

Abstract: A cutting insert may include a base member and a coating layer thereon. The coating layer may include a first layer including a titanium compound on the base member, a second layer including alumina and an upper surface on the first layer, and a third layer including a titanium compound on the upper surface. The coating layer may include a crack at a top surface and therein. In a cross section orthogonal to the top surface, the crack may be present in the third layer and the second layer; in the third layer it may have a width of 1 ?m or more. In the upper surface it may have a width of 0.5 ?m or more—smaller than the width of the crack in the third layer. Another part may have a width of 0.2 ?m or less closer to the base member than the upper surface.

Abstract: A cemented carbide may include a hard phase that may include W and C, a first solid solution phase and a second solid solution phase, each of which may include W, C, Ti and Zr, and a binder phase that may include an iron group metal. The cemented carbide may include 1.0-3.0 mass % of the Ti in terms of TiC, and 0.75-2.0 mass % of the Zr in terms of ZrC. An amount of the Ti in terms of TiC may be more than 1 time and less than three times an amount of the Zr in terms of ZrC. The first solid solution phase may satisfy a relationship of 0.1?Ti/(Ti+Zr)<0.4 in terms of atomic ratio. The second solid solution phase satisfies a relationship of 0.7?Ti/(Ti+Zr)?0.9 in terms of atomic ratio.

Abstract: A coated tool includes a base and a coating layer. The coating layer includes a first layer including TiCN, a second layer including Al2O3, and a third layer including at least one of TiN and TiCN. Cl content included in the first, second and third layers is first, second and third Cl content. Each of the first Cl content and the third Cl content is larger than the second Cl content. The first Cl content is more than 0.2 atomic % and not more than 2 atomic %. The third Cl content is more than 0.2 atomic % and not more than 2 atomic %. A cutting tool of the present disclosure includes a holder which has a length from a first end to a second end and includes a pocket on a side of the first end; and the coated tool located in the pocket.

Abstract: An insert of the present disclosure includes a base. The base includes a first surface, a second surface connecting to the first surface, and a cutting edge located on at least a part of a ridgeline of the first surface and the second surface. A region within 2.0 mm from the cutting edge in the first surface is a surface region A. A region within 0.5 mm from the surface region A is a region A1. A region within 1.2 mm from the surface region A and the second surface to 2.0 mm from the surface region A and the second surface is a region A2. An area ratio of vacancies in the region A1 is 0.005-0.04 area %, and an area ratio of vacancies in the region A2 is 0.05-0.2 area %. A cutting tool includes a holder including a pocket and the insert located in the pocket.

Abstract: A cemented carbide may include a hard phase that may include W and C, a first solid solution phase and a second solid solution phase, each of which may include W, C, Ti and Zr, and a binder phase that may include an iron group metal. The cemented carbide may include 1.0-3.0 mass % of the Ti in terms of TiC, and 0.75-2.0 mass % of the Zr in terms of ZrC. An amount of the Ti in terms of TiC may be more than 1 time and less than three times an amount of the Zr in terms of ZrC. The first solid solution phase may satisfy a relationship of 0.1?Ti/(Ti+Zr)<0.4 in terms of atomic ratio. The second solid solution phase satisfies a relationship of 0.7?Ti/(Ti+Zr)?0.9 in terms of atomic ratio.

Abstract: A cemented carbide may include a hard phase including W and C, and a binder phase including cubic Co. The binder phase may include Zr. The Co may include a lattice constant of more than 3.5575 ? and not more than 3.5600 ?. A coated tool may include a coating layer located on a surface of the cemented carbide. A cutting tool may include a holder that is extended from a first end toward a second end and may include a pocket on a side of the first end, and the coated tool located in the pocket.

Abstract: A coated tool include a first surface, a second surface which is adjacent to the first surface, and a cutting edge which is located on at least a portion of a ridge between the first surface and the second surface. The coated tool further includes a substrate, and a coating layer that is located on the substrate. The coating layer includes a titanium carbonitride layer and an aluminum oxide layer which has an ?-type crystalline structure. The titanium carbonitride layer is located nearer to the substrate than the aluminum oxide layer.

Abstract: A cutting insert may include a base member and a coating layer thereon. The coating layer may include a first layer including a titanium compound on the base member, a second layer including alumina and an upper surface on the first layer, and a third layer including a titanium compound on the upper surface. The coating layer may include a crack at a top surface and therein. In a cross section orthogonal to the top surface, the crack may be present in the third layer and the second layer; in the third layer it may have a width of 1 ?m or more. In the upper surface it may have a width of 0.5 m or more—smaller than the width of the crack in the third layer. Another part may have a width of 0.2 m or less closer to the base member than the upper surface.

Abstract: A cutting tool comprises a base including a hard alloy and a coating layer located on a surface of the base, wherein the coating layer comprises at least one TiCN layer, an Al2O3 layer and an outermost layer which are laminated in order from a side of the base, and a content of Cl at a thickness-center position of the TiCN layer is higher than a content of Cl at a thickness-center position of the outermost layer and the content of Cl at the thickness-center position of the outermost layer is higher than a content of Cl at a thickness-center position of the Al2O3 layer in a glow-discharge emission spectrometry (GDS analysis).

Abstract: A coated tool is, for example, a cutting tool which is provided with a base material and a coating layer located on a surface of the base material, wherein a cutting edge and a flank surface are located on the coating layer, the coating layer has a portion in which at least a titanium carbonitride layer and an aluminum oxide layer having an ?-type crystal structure are laminated in this order, and, with regard to a texture coefficient Tc (hkl) which is calculated on a basis of a peak of the aluminum oxide layer analyzed by an X-ray diffraction analysis, a texture coefficient Tc1 (0 1 14) as measured from a surface side of the aluminum oxide layer on a side of the flank surface is 1 or more.

Abstract: A cutting tool includes: a base including cemented carbide containing Cr; and a coating layer including a Ti-based layer including at least a layer of Ti(Cx1Ny1Oz1) (0?x1?1, 0?y1?1, 0?z1?1, x1+y1+z1=1), an Al2O3 layer, and an outermost layer of Ti(Cx3Ny3Oz3) (0?x3?1, 0?y3?1, 0?z3?1, x3+y3+z3=1), and a content of Cr contained at a first Ti-based layer of the Ti-based layer is lower than a content of Cr contained in the base, and higher than a content of Cr contained at the Al2O3 layer, and a content of Cr contained at the outermost layer is higher than the content of Cr contained at the Al2O3 layer in a glow-discharge emission spectrometry.

Abstract: A coated tool include a first surface, a second surface which is adjacent to the first surface, and a cutting edge which is located on at least a portion of a ridge between the first surface and the second surface. The coated tool further includes a substrate, and a coating layer that is located on the substrate. The coating layer includes a titanium carbonitride layer and an aluminum oxide layer which has an ?-type crystalline structure. The titanium carbonitride layer is located nearer to the substrate than the aluminum oxide layer.

Abstract: A cutting tool comprises a base including a hard alloy and a coating layer located on a surface of the base, wherein the coating layer comprises at least one TiCN layer, an Al2O3 layer and an outermost layer which are laminated in order from a side of the base, and a content of Cl at a thickness-center position of the TiCN layer is higher than a content of Cl at a thickness-center position of the outermost layer and the content of Cl at the thickness-center position of the outermost layer is higher than a content of Cl at a thickness-center position of the Al2O3 layer in a glow-discharge emission spectrometry (GDS analysis).

Abstract: A cutting tool includes: a base including cemented carbide containing Cr; and a coating layer including a Ti-based layer including at least a layer of Ti(Cx1Ny1Oz1) (0?x1?1, 0?y1?1, 0?z1?1, x1+y1+z1=1), an Al2O3 layer, and an outermost layer of Ti(Cx3Ny3Oz3) (0?x3?1, 0?y3?1, 0?z3?1, x3+y3+z3=1), and a content of Cr contained at a first Ti-based layer of the Ti-based layer is lower than a content of Cr contained in the base, and higher than a content of Cr contained at the Al2O3 layer, and a content of Cr contained at the outermost layer is higher than the content of Cr contained at the Al2O3 layer in a glow-discharge emission spectrometry.

Abstract: A coated tool is, for example, a cutting tool which is provided with a base material and a coating layer located on a surface of the base material, wherein a cutting edge and a flank surface are located on the coating layer, the coating layer has a portion in which at least a titanium carbonitride layer and an aluminum oxide layer having an ?-type crystal structure are laminated in this order, and, with regard to a texture coefficient Tc (hkl) which is calculated on a basis of a peak of the aluminum oxide layer analyzed by an X-ray diffraction analysis, a texture coefficient Tc1 (0 1 14) as measured from a surface side of the aluminum oxide layer on a side of the flank surface is 1 or more.

Abstract: A cutting tool including a base, a TiN layer on the base, a TiCN layer on the TiN layer, and an Al2O3 layer on the TiCN layer. The base contains a cemented carbide. The TiN layer and the TiCN layer contain Nb. A Nb content in the TiCN layer at a middle portion of the TiCN layer in a thickness direction is 0.1% by mass or more, and the Nb content in the Al2O3 layer at a middle portion of the Al2O3 layer in the thickness direction is 0.05% by mass or less.

Abstract: A cutting tool including a base, a TiN layer on the base, a TiCN layer on the TiN layer, and an Al2O3 layer on the TiCN layer. The base contains a cemented carbide. The TiN layer and the TiCN layer contain Nb. A Nb content in the TiCN layer at a middle portion of the TiCN layer in a thickness direction is 0.1% by mass or more, and the Nb content in the Al2O3 layer at a middle portion of the Al2O3 layer in the thickness direction is 0.05% by mass or less.

Abstract: Provided is a cutting tool such that the progress of wear is delayed and that wear resistance is excellent. This cutting tool is configured in such a way that multiple cover layers (7, 8, 9, 10, 11, 12, 14) are formed on the surface of a substrate (6); that the outermost layer (14), which is one of the cover layers, comprises a Ti(CxNyOz)a (x+y+z=1, 0?x?0.6, 0?y?0?0.6, 0.2?z?0.8, 1.0?a?1.7) layer; and that the thickness of that portion of the outermost layer (14) which is located in the center section (3a) of a flank surface is smaller than the surface roughness (Ra) of the outermost layer (14). The outermost layer (14) comes into contact with an article to be cut, leading to a coating being generated, with the result that the progress of wear is restricted.