Abstract: A coated tool in a non-limiting embodiment of the present disclosure includes a base and a coating layer located on the base. The coated tool includes a first surface, a second surface adjacent to the first surface, and a cutting edge located on at least a part of a ridge part of the first surface and the second surface. The coating layer includes a Ti-based coating layer. If a fracture toughness value of the Ti-based coating layer is measured on a surface of the coating layer parallel to a surface of the base, the Ti-based coating layer includes a first region where the fracture toughness value is 10 MPa·m0.5 or more.

Abstract: A coated tool in a non-limiting embodiment of the present disclosure includes a base and a coating layer located on the base. The coated tool includes a first surface, a second surface adjacent to the first surface, and a cutting edge located on at least a part of a ridge part of the first surface and the second surface. The coating layer includes a Ti-based coating layer. If a fracture toughness value of the Ti-based coating layer is measured on a surface of the coating layer parallel to a surface of the base, the Ti-based coating layer includes a first region where the fracture toughness value is 10 MPa·m0.5 or more.

Abstract: A coated tool in a non-limiting embodiment of the present disclosure includes a base and a coating layer located on the base. The coated tool includes a first surface, a second surface adjacent to the first surface, and a cutting edge located on at least a part of a ridge part of the first surface and the second surface. The coating layer includes an Al2O3 layer. If a fracture toughness value of the Al2O3 layer is measured on a surface of the coating layer parallel to a surface of the base, the Al2O3 layer includes a first region where the fracture toughness value is 5 MPa·m0.5 or more.

Abstract: A coated tool includes a base and a coating layer on the base. The coating layer includes a first layer including Al2O3 particles, and a second layer on the first layer. The second layer includes, sequentially from the base, a first film, a second film in contact with the first film, and a third film in contact with the second film. The first to third films individually include Ti. The first film, the second film and the third film individually include at least one kind selected from C and N. The coated tool satisfies a relationship of a first N content>a third N content>a second N content, in which the first N content is an N content in the first film, the second N content is an N content in the second film, and the third N content is an N content in the third film.

Abstract: A coated tool of the present disclosure is provided with a base member and a coating layer located on a surface of the base member. The coating layer includes a TiCNO layer and an Al2O3 layer. The Al2O3 layer is located in contact with the TiCNO layer at a position farther from the base member than the TiCNO layer is. The TiCNO layer includes a plurality of first protrusions that project toward the Al2O3 layer, and a beam that extends in a direction intersecting a direction in which the first protrusions project, to connect the first protrusions. A cutting tool of the present disclosure is provided with: a holder extending from a first end toward a second end and including a pocket on a side of the first end; and the above-described coated tool located in the pocket.

Abstract: A coated tool of the present disclosure is provided with a base member and a coating layer located on a surface of the base member. The coating layer includes a TiCNO layer and an Al2O3 layer. The Al2O3 layer is located in contact with the TiCNO layer at a position farther from the base member than the TiCNO layer is. The TiCNO layer includes a first composite protrusion including a first protrusion that projects toward the Al2O3 layer and a second protrusion that projects from the first protrusion in a direction intersecting a direction in which the first protrusion projects. A cutting tool of the present disclosure is provided with: a holder extending from a first end toward a second end and including a pocket on a side of the first end; and the above-described coated tool located in the pocket.

Abstract: A coated tool of the present disclosure is provided with a base member and a coating layer located on a surface of the base member. The coating layer includes a TiCNO layer and an Al2O3 layer. The Al2O3 layer is located in contact with the TiCNO layer at a position farther from the base member than the TiCNO layer is. The TiCNO layer includes a composite protrusion including a first protrusion that projects toward the Al2O3 layer, a second protrusion that projects from the first protrusion in a direction intersecting a direction in which the first protrusion projects, and a third protrusion that projects from the second protrusion in a direction intersecting the direction in which the second protrusion projects.

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 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: A coated tool may include a base member having a first surface and a coating layer may be located on the first surface. The coating layer may include a first layer having a plurality of ?-Al2O3 crystal particles. At least one of the ?-Al2O3 crystal particles has at least two regions with different orientations from each other.

Abstract: A coated tool of the present disclosure is provided with a base member and a coating layer located on a surface of the base member. The coating layer includes a TiCNO layer and an Al2O3 layer. The Al2O3 layer is located in contact with the TiCNO layer at a position farther from the base member than the TiCNO layer is. The TiCNO layer includes a plurality of first protrusions that project toward the Al2O3 layer, and a beam that extends in a direction intersecting a direction in which the first protrusions project, to connect the first protrusions. A cutting tool of the present disclosure is provided with: a holder extending from a first end toward a second end and including a pocket on a side of the first end; and the above-described coated tool located in the pocket.

Abstract: A coated tool of the present disclosure is provided with a base member and a coating layer located on a surface of the base member. The coating layer includes a TiCNO layer and an Al2O3 layer. The Al2O3 layer is located in contact with the TiCNO layer at a position farther from the base member than the TiCNO layer is. The TiCNO layer includes a first composite protrusion including a first protrusion that projects toward the Al2O3 layer and a second protrusion that projects from the first protrusion in a direction intersecting a direction in which the first protrusion projects. A cutting tool of the present disclosure is provided with: a holder extending from a first end toward a second end and including a pocket on a side of the first end; and the above-described coated tool located in the pocket.

Abstract: A coated tool of the present disclosure is provided with a base member and a coating layer located on a surface of the base member. The coating layer includes a TiCNO layer and an Al2O3 layer. The Al2O3 layer is located in contact with the TiCNO layer at a position farther from the base member than the TiCNO layer is. The TiCNO layer includes a composite protrusion including a first protrusion that projects toward the Al2O3 layer, a second protrusion that projects from the first protrusion in a direction intersecting a direction in which the first protrusion projects, and a third protrusion that projects from the second protrusion in a direction intersecting the direction in which the second protrusion projects.

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: In an aspect of the disclosure, a cutting tool includes a base member and a coating layer located on a surface of the base member. The coating layer includes a lower layer, an upper layer, and an intermediate layer located between the lower layer and the upper layer. The intermediate layer includes a first layer, a second layer, and a third layer. The first layer contains TiCx1Ny1Oz1 (0?x1<1, 0?y1<1, 0<z1<1, and x1+y1+z1=1). The second layer contains TiCx2Ny2Oz2 (0?x2<1, 0?y2<1, 0<z2<1, and x2+y2+z2=1). The third layer is located between the first layer and the second layer, and contains TiCx3Ny3Oz3 (0?x3<1, 0?y3<1, 0?z3<1, and x3+y3+z3=1). Here, z1>z3 and z2>z3.

Abstract: A coated tool may include a base member having a first surface and a coating layer may be located on the first surface. The coating layer may include a first layer having a plurality of ?-Al2O3 crystal particles. At least one of the ?-Al2O3 crystal particles has at least two regions with different orientations from each other.

Abstract: A cutting insert may include a base member and a coating layer. The base member may include a first and second surface. The coating layer may be located on the base member. The coating layer may include a first layer containing ?-aluminum oxide, which is located above the first surface and the second surface. The first layer may include a first region located above the first surface, and a second region located above the second surface. When an angle formed by a normal line of a crystal plane (001) of the ?-aluminum oxide in the first layer and a normal line of the surface of the base member is a first inclination angle, a peak of a distribution of the first inclination angle in the first region is located at a lower angle side than a peak of a distribution of the first inclination angle in the second region.