Abstract: A coated tool may include a base member including a first surface, and a coating layer located at least on the first surface of the base member. The coating layer may include a first layer located on the first surface and including a titanium compound, and a second layer contactedly located on the first layer and including aluminum oxide. The second layer may include an orientation coefficient Tc(0012) of 3.0 or more by X-ray diffraction analysis. The coating layer may include a plurality of voids located in a direction along an interface between the first layer and the second layer, and an average value of widths of the voids in a direction along the interface is smaller than an average value of distances between the voids adjacent to each other in a cross section orthogonal to the first surface.

Abstract: A coated tool may include a base member having a first surface and a coating layer located on the first surface. The coating layer may have a first layer and a second layer. The first layer may be located on the first surface, and the first layer may include aluminum oxide. The second layer may be contactedly located on the first layer, and the second layer may include a titanium compound. In a cross section orthogonal to the first surface, the first layer may include a first projection protruding toward the second layer and a first recess located on the first projection. The second layer may include a second recess engaged with the first projection and a second projection engaged with the first recess.

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 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 in the present disclosure includes a base and a coating layer located on a surface of the base. The coating layer includes an intermediate layer including Ti, and an Al2O3 layer. The Al2O3 layer is located in contact with the intermediate layer at a position further away from the base than the intermediate layer. The intermediate layer includes a plurality of first protrusions protruding toward the Al2O3 layer. An average distance between the plurality of first protrusions is 70-120 nm. A cutting tool in the present disclosure includes a holder which is extended from a first end toward a second end and includes a pocket on a side of the first end, and the coated tool located in the pocket.

Abstract: A coated tool in the present disclosure includes a base and a coating layer located on a surface of the base. The coating layer includes a TiCN layer, an intermediate layer including Ti, and an Al2O3 layer in this order from a side of the base. The Al2O3 layer is located in contact with the intermediate layer at a position further away from the base than the intermediate layer. The intermediate layer includes a plurality of first protrusions protruding toward the Al2O3 layer. An average area of the plurality of first protrusions is 1700 nm2 or less. A cutting tool in the present disclosure includes a holder which is extended from a first end toward a second end and includes a pocket on a side of the first end, and the coated tool located in the pocket.

Abstract: A coated tool in the present disclosure includes a base and a coating layer located on a surface of the base. The coating layer includes an intermediate layer including Ti, and an Al2O3 layer. The Al2O3 layer is located in contact with the intermediate layer at a position further away from the base than the intermediate layer. The intermediate layer includes a plurality of first protrusions protruding toward the Al2O3 layer. At least one of the plurality of first protrusions is a composite protrusion including second protrusions protruding in a direction intersecting with a protruding direction of the first protrusions. A percentage of the composite protrusions in the plurality of first protrusions is 30% or less. A cutting tool in the present disclosure includes a holder which is extended from a first end toward a second end and includes a pocket on a side of the first end, and the coated tool located in the pocket.

Abstract: A coated tool in the present disclosure includes a base and a coating layer located on a surface of the base. The coating layer includes an intermediate layer including Ti, and an Al2O3 layer. The Al2O3 layer is located in contact with the intermediate layer at a position further away from the base than the intermediate layer. The intermediate layer includes a plurality of first protrusions protruding toward the Al2O3 layer. At least one of the plurality of first protrusions is a composite protrusion including second protrusions protruding in a direction intersecting with a protruding direction of the first protrusions. An average number of the second protrusions in the composite protrusion is 1.4 or less. A cutting tool in the present disclosure includes a holder which is extended from a first end toward 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 coated tool may include a base member including a first surface, and a coating layer located at least on the first surface of the base member. The coating layer may include a first layer and a second layer. The first layer may be located on the first surface and may include a titanium compound. The second layer may be contactedly located on the first layer and may include aluminum oxide. The coating layer may include a plurality of voids located side by side in the first layer in a direction along a boundary between the first layer and the second layer in a cross section orthogonal to the first surface.

Abstract: A coated tool may include a base member including a first surface, and a coating layer located at least on the first surface of the base member. The coating layer may include a first layer located on the first surface and including a titanium compound, and a second layer contactedly located on the first layer and including aluminum oxide. The second layer may include an orientation coefficient Tc(0012) of 3.0 or more by X-ray diffraction analysis. The coating layer may include a plurality of voids located in a direction along an interface between the first layer and the second layer, and an average value of widths of the voids in a direction along the interface is smaller than an average value of distances between the voids adjacent to each other in a cross section orthogonal to the first surface.

Abstract: A coated tool may include a base member including a first surface, and a coating layer. The coating layer may include a plurality of voids located side by side in a first layer in a direction along an interface, which is a boundary between the first layer and a second layer. The second layer may include a lower layer part and an upper layer part, and an angle formed by a normal line of (001) surface of the constituent particles with respect to a cross section of the second layer is an orientation difference, the lower layer part of the second layer includes a ratio of the particles whose orientation difference is 10° or more of 50% or more, and the upper layer part of the second layer includes a ratio of the particles whose orientation difference is 10° or less of 80% or more.

Abstract: A coated tool may include a base member including a first surface and a coating layer located on the base member. The coating layer may include a first layer, a second layer, and a plurality of voids. In an inclination angle distribution graph in which an inclination angle formed by a normal line of a {112} surface that is a crystal surface of crystal grains of the first layer with respect to a normal line of a surface of the first layer is measured, the measured inclination angles within a range of 0 to 45° are divided into pitches of 0.25°, and degrees existing in each division are accumulated, the highest peak exists in a range of 0 to 10°. The total number of degrees existing within this range accounts for 45% or more of all degrees.

Abstract: A coated tool may include a base member and a coating layer. The coating layer may include a Ti(C, N) layer, and an Al2O3 layer covering the Ti(C, N) layer. The Ti(C, N) layer may include a void region including a plurality of voids along an interface between the Ti(C, N) layer and the Al2O3 layer. An average value of widths of the voids may be less than an average value of distances between the voids adjacent to each other. The Ti(C, N) layer may include a first Ti(C, N) layer located closer to the base member than the void region. An average atomic ratio of carbon to the sum of carbon and nitrogen (C/(C+N)) in the first Ti(C, N) layer may be 0.50 to 0.65.

Abstract: A coated tool may include a base member including a first surface, and a coating layer located at least on the first surface of the base member. The coating layer may include a first layer which is located on the first surface and which includes cubic titanium carbonitride, and a second layer which is contactedly located on the first layer. The first layer may include an orientation coefficient Tc (220) of the titanium carbonitride by X-ray diffraction analysis of 3.0 or more. The coating layer may include a plurality of voids located side by side in the first layer. An average value of widths of the voids in a direction along the interface may be less than an average value of distances between the voids adjacent to each other.

Abstract: A coated tool may include a base member including a first surface, and a coating layer located on the first surface. On the first surface, scattered island portions may include 70 area % or more of a binder phase and have an equivalent circle diameter of 10 ?m or more. The coating layer may include a first layer including a titanium compound and located on the first surface, and a second layer including aluminum oxide and located on and in contact with the first layer. The coating layer may include a plurality of voids. An average value of widths of the voids in the direction along the boundary may be less than an average value of distances between the voids adjacent to each other.

Abstract: A coated tool may include a base member having a first surface and a coating layer located on the first surface. The coating layer may have a first layer and a second layer. The first layer may be located on the first surface, and the first layer may include aluminum oxide. The second layer may be contactedly located on the first layer, and the second layer may include a titanium compound. In a cross section orthogonal to the first surface, the first layer may include a first projection protruding toward the second layer and a first recess located on the first projection. The second layer may include a second recess engaged with the first projection and a second projection engaged with the first recess.

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 may include a base member including a first surface, and a coating layer located at least on the first surface of the base member. The coating layer may include a first layer and a second layer. The first layer may be located on the first surface and may include a titanium compound. The second layer may be contactedly located on the first layer and may include aluminum oxide. The coating layer may include a plurality of voids located side by side in the first layer in a direction along a boundary between the first layer and the second layer in a cross section orthogonal to the first surface.