Abstract: A cutting insert includes a base body and a coating layer, and also includes a rake surface, a flank surface, and a cutting edge located along an intersecting ridge therebetween. The rake surface includes an outer peripheral part and a middle part protruded relative to the outer peripheral part. The middle part includes a constraining surface. The outer peripheral part includes a first breaker part, a second breaker part, and the third breaker part adjacent to the constraining surface. The constraining surface is configured by the base body and the coating layer does not exist at the constraining surface. A skewness Rsk of a roughness curve at the constraining surface is ?1.5 ?m to ?0.5 ?m. A skewness Rsk at the third breaker part is ?0.2 ?m or less. The skewness Rsk at the constraining surface is smaller than the skewness Rsk at the third breaker part.

Abstract: The invention suppresses chipping of a cutting edge of a cutting tool while maintaining sharpness of the cutting edge. [Solution] A coating (20) of a replaceable knife (10) of the cutting tool is formed so that either one of a rake-face coating portion (22) that coats a rake face (14) or a clearance-face coating portion (24) that coats a clearance face (16) becomes thicker than the other. The film thickness of the thicker coating portion (22, 24) is set in a range of 0.5 ?m to 15.0 ?m, and a ratio of the film thickness of the thinner coating portion (24, 22) to the film thickness of the thicker coating portion (22, 24) is set in a range of 0.01 to 0.15.

Abstract: A cutting tool (2) is specified with a cutting region (4) that comprises a substrate (12) onto which a coating (10) is applied, which coating (10) is subsequently processed, whereby a sharp cutting edge (8) is formed. Furthermore, a corresponding method for the manufacture of the cutting tool (2) is specified. By means of the sharpening of the cutting edge (8) after the coating rather than before, a particularly sharp cutting edge (8) is formed, whereby the precision of the cutting tool (2) as well as its service life is improved.

Abstract: In an embodiment, a coated tool is disclosed. The coated tool includes a base material, a first layer on the base material, and a second layer coated on the first layer. The first layer contains diamond crystals therein and has a first mean crystal size. The second layer contains diamond crystals therein and has a second mean crystal size that is smaller than the first mean crystal size. The first and the second layers contain hydrogen, and have a first hydrogen content and a second hydrogen content respectively. The second hydrogen content is larger than the first hydrogen content.

Abstract: Embodiments disclosed herein relate to superabrasive compacts having a metallic member disposed between a superabrasive body and a substrate; and drill bits and methods of making the same.

Abstract: A cemented carbide and a coated cemented carbide each include a Zr carboxide. The cemented carbide includes a hard phase containing main component tungsten carbide and a binder phase containing at least one main component element selected from the group consisting of Co, Ni and Fe. The cemented carbide includes 75 to 95 mass % of the hard phase and 5 to 25 mass % of the binder phase in an inner region inner than 500 ?m below a surface of the cemented carbide. The hard phase includes a Zr carboxide; and Zrsur/Zrin is from 0.25 to 0.80 when an average content of the Zr carboxide in a surface region which ranges from the surface of the cemented carbide to a depth of 500 ?m therebelow is denoted by Zrsur and an average content of the Zr carboxide in an inner region inner than the surface region is denoted by Zrin.

Abstract: A surface-coated cutting tool includes a base material and a coating formed on the base material. The coating includes an ?-Al2O3 layer. The ?-Al2O3 layer contains ?-Al2O3 crystal grains and sulfur, and has a TC(006) of more than 5 in texture coefficient TC(hkl). The sulfur has a concentration distribution in which a concentration of the sulfur decreases in a direction away from a base-material-side surface of the ?-Al2O3 layer, in a thickness direction of the ?-Al2O3 layer.

Abstract: A cutting tool based on an embodiment of the present invention is provided with a cylindrical main body section which is made of a cobalt-containing cemented carbide alloy and is rotatable about the central axis thereof, a cutting edge which is provided at at least one of the tip and the periphery of the main body section, a chip discharge groove which extends from the cutting edge toward the rear end of the main body section, and a coating layer which is made of diamond and covers the cutting edge, wherein the cobalt content of the surface of the main body section at the part coated with the coating layer is less than the cobalt content of the surface of the main body section at parts other than the part coated with the coating layer.

Abstract: A sintered compact has a first material, a second material, and a third material. The first material is cubic boron nitride. The second material is a compound including zirconium. The third material is an aluminum oxide and the aluminum oxide includes a fine-particle aluminum oxide. The sintered compact has a first region in which not less than 5 volume % and not more than 50 volume % of the fine-particle aluminum oxide is dispersed in the second material. On arbitrary straight lines in the first region, an average value of continuous distances occupied by the fine-particle aluminum oxide is not more than 0.08 ?m and a standard deviation of the continuous distances occupied by the fine-particle aluminum oxide is not more than 0.1 ?m.

Abstract: A coated cutting tool includes a substrate having a rake side, a clearance side and a cutting edge and a coating comprising a first layer and a second layer. The second layer has a sandwich structure of an inner layer, an intermediate layer and an outer layer, wherein the inner layer is exposed through an opening in the outer layer, the opening extending over at least a portion of the width of the cutting edge. Thereby, a double layer is provided in critical areas, whereas a single layer is provided in other areas. The double oxide layer is an aluminum oxide layer. A method for manufacturing the coated cutting tool is also provided.

Abstract: A method of forming polycrystalline diamond includes providing an alloy over diamond particles and subjecting the diamond particles to a pressure of at least 4.5 GPa and a temperature of at least 1,000° C. to form inter-granular bonds. The alloy includes iridium and at least one of copper, silver, and gold. A polycrystalline diamond compact includes diamond grains bonded by inter-granular bonds and an alloy disposed within interstitial spaces. The alloy includes iridium, carbon, and at least one of copper, silver, and gold. An earth-boring tool includes a bit body and a polycrystalline diamond compact secured to the bit body. Some methods include selecting an alloy that is catalytic to formation of diamond-to-diamond bonds when the alloy is in a liquid phase, but non-catalytic to the back-conversion of diamond to graphite at temperatures of less than about 1,000° C.

Abstract: A polycrystalline diamond compact (PDC) has a diamond matrix including inter-bonded diamond grains and nanodiamond agglomerates within interstitial spaces in the diamond matrix. A volume percentage of the nanodiamond agglomerates in the PDC may be greater than or equal to a percolation threshold volume of the nanodiamond agglomerates in the PDC, and a remainder of the volume of the PDC may be at least substantially comprised by the diamond matrix. The PDC may be at least substantially free of metal solvent catalyst material. Earth-boring tools include one or more such PDCs. A method of manufacturing a PDC includes mixing diamond grains with nanodiamond agglomerates to form a mixture, and subjecting the mixture to a high-temperature/high-pressure (HTHP) sintering process to form the PDC without any substantial assistance from a metal solvent catalyst material.

Abstract: A face mill includes a circular arc profile and is configured for machining Inconel. In particular the cutting portion is made of a ceramic material, and has an axial sub-edge with a positive axial rake angle ? to increase tool life.

Abstract: A surface-coated cutting tool according to the present invention is provided with a base material and a coating formed on the base material, the coating includes an ?-Al2O3 layer, the ?-Al2O3 layer includes a plurality of crystal grains of ?-Al2O3 and shows (001) orientation, a grain boundary of the crystal grains contains a CSL grain boundary and a general grain boundary, and a length of a ?3 crystal grain boundary out of the CSL grain boundary exceeds 80% of a length of a ?3-29 crystal grain boundary and is equal to or more than 10% and equal to or less than 50% of the total length of all grain boundaries which is the sum of the length of the ?3-29 crystal grain boundary and a length of the general grain boundary.

Abstract: A coated cutting tool includes a substrate with a rake side, a clearance side and a cutting edge, and a coating including a first layer and a second layer. The second layer includes an inner layer and an outer layer, wherein the first layer is exposed through an opening in the inner layer and the opening extends over at least a portion of the width of the cutting edge. Thereby, a double layer is provided in critical areas, whereas a single layer is provided in other areas. Preferably, the double oxide layer includes aluminum oxide layers. A method for manufacturing the coated cutting tool is also provided.

Abstract: A tip (20) for a rotary machine tool comprising a superhard structure (12) joined to a cemented carbide substrate 14 by means of at least one intermediate layer (161, 62, 163) disposed between the superhard structure (12) and the cemented carbide substrate (14), the intermediate layer or layers (161, 162, 163) comprising grains of superhard material and grains of a metal carbide material dispersed in a metal binder material.

Abstract: A multi-layer polycrystalline superabrasive PCD or PCBN blank for attachment to a working tool is disclosed. The blank comprises an abrasive layer of PCD or PCBN and a substrate layer of cobalt containing cemented tungsten carbide. In between the abrasive and substrate layers is a metal mesh stabilizer layer sintered by HPHT to the abrasive and substrate layers. The apertures of the mesh layer contain PCD or PCBN which, along with the mesh are sintered to the support and substrate layers and cobalt present in the substrate layer is infiltrated through the mesh layer into the abrasive layer as a binder. The metal mesh layer provides stability to the abrasive and substrate layers which have different stress and thermal expansion properties.

Abstract: The present invention relates to a method of making a cemented carbide comprising mixing in a slurry a first powder fraction and a second powder fraction, subjecting the slurry to milling, drying, pressing and sintering. The first powder fraction is made from cemented carbide scrap recycled using the Zn recovery process, comprising the elements W, C, Co, and at least one or more of Ta, Ti, Nb, Cr, Zr, Hf and Mo, and the second powder fraction comprising virgin raw materials of WC and possibly carbides and/or carbonitrides of one or more of Cr, Zr, W, Ta, Ti, Hf and Nb. The first powder fraction is subjected to a pre-milling step, prior to the step of forming the slurry, to obtain an average grain size of between 0.2 to 1.5 ?m.

Abstract: Disclosed is an alpha alumina (?-Al2O3) thin film comprising the lower layer formed on the base material made from cemented carbide; and the ?-Al2O3 thin film layer formed on the lower layer, wherein when the ?-Al2O3 thin film layer is divided, from the total thickness (T) thereof, into a D1 layer which is from an interface layer to 0.15T, a D2 layer which is from 0.15T to 0.4T, and a D3 layer which is from 0.4T to 1T, an S1 (D3 layer grain size/D1 layer grain size) is 2-5.5 and an S2 (D2 layer grain size/D1 layer grain size) is 1.5-4.

Abstract: According to an aspect of the invention, there is provided a composite structural body including a base material; and a film-like structural body formed on a surface of the base material by causing an aerosol to impinge on the base material, the aerosol including fine particles dispersed in a gas, a distance between an end part of the film-like structural body and an outermost part closest to the end part of a portion of the film-like structural body having a film thickness equal to an average film thickness of the film-like structural body as viewed perpendicular to the surface being 10 times or more of the average film thickness.

Abstract: A bit for a rotary drill, the bit including a cylindrical body having at least two flutes provided therein, the cylindrical body terminating in a cutting end; and a cylindrical land defined by a peripheral face of the cylindrical body between adjacent flutes, the cylindrical land including a margin that is radially elevated relative to a remainder of the cylindrical land; the margin having a width that varies along the length of the cylindrical land.

Abstract: A workpiece accommodation device for purposes of accommodating a workpiece and for use in a device for the machining of a workpiece with: a tool mounting for purposes of accommodating the tool, a workpiece accommodation device for purposes of accommodating the workpiece, characterized in that during the machining process at least one first oscillation component can be introduced in a Z-direction, and an, in particular simultaneous, second oscillation component can be introduced in an X- and/or Y-direction by means of oscillation components.

Abstract: In the method of the present invention for producing a thin film, including introducing, onto a substrate, a vapor that has been obtained by vaporizing a thin-film-forming material including a molybdenum imide compound represented by the following formula (I) and that includes the molybdenum imide compound; and then forming a thin film including molybdenum on the substrate by decomposing and/or chemically reacting the molybdenum imide compound. (In the formula, R1 though R10 each represent a hydrogen atom or a linear or branched alkyl group having 1 to 5 carbon atoms, and R11 represents a linear or branched alkyl group having 1 to 8 carbon atoms.

Abstract: Local variability of the grain size of work function metal, as well as its crystal orientation, induces a variable work function and local variability of transistor threshold voltage. If the metal nitride for the work function metal of the transistor gate is deposited using a radio frequency physical vapor deposition, equiaxed grains are produced. The substantially equiaxed structure for the metal nitride work function metal layer (such as with TiN) reduces local variability in threshold voltage.

Abstract: An adherent coating for carbide and ceramic substrates employs a thin layer between the substrate and a subsequent layer or layers. The thin layer may be employed without thermal cracking due to heat during use, such as for the insert of a cutting tool, because the upper layer or layers provide a gradual transition of material properties to a harder, less thermally conductive material on the outermost layer. A particular arrangement of layers on the carbide or ceramic substrate may be, from innermost to outermost layer, hafnium nitride, titanium carbide, aluminum oxide, and titanium nitride.

Abstract: A friction stir welding tool for welding of metallic plates and especially steel plates. The friction stir welding tool is made of cemented carbide comprising WC grains in a binder phase and wherein the welding tool is at least partly coated with a surface coating comprising Al2O3.

Abstract: Cutting elements for earth-boring tools may include a polycrystalline table attached to a portion of a first substrate on which the polycrystalline table was formed. The portion of the first substrate may exhibit a thickness less than a thickness of the first substrate before a remainder of the first substrate was removed to form the portion of the first substrate. Another substrate may be attached to the portion of the first substrate, the portion of the first substrate being interposed between the polycrystalline table and the other substrate. Earth-boring tools may include such cutting elements secured to bodies of the earth-boring tools. Bearings for earth-boring tools may include a polycrystalline table attached to a portion of a first substrate on which the polycrystalline table was formed, the polycrystalline table defining a contact surface. Another substrate may be attached to the portion of the first substrate.

Abstract: The present disclosure provides a TFT array substrate and manufacturing method thereof, forming a class structure of graphene-like two-dimensional layered semiconductor material on a base substrate and transferring the class structure of graphene-like two-dimensional layered semiconductor material on the designated position of the soft substrate to be a semiconductor active layer of the array substrate, therefore the semiconductor active layer of the TFT array substrate of the present disclosure uses a class structure of graphene-like two-dimensional layered semiconductor material to makes the array substrate having the advantage of higher electron mobility and mechanical property, excellent flexural resistance and reducing thickness of the substrate greatly.

Abstract: Multi-flute endmill having a cutting edge rake face formed from a side of a rotation axis to a peripheral side in a radial direction, and having an end cutting edge rake face. A peripheral cutting edge rake face adjacent to the end cutting edge rake face forms a face different from the end cutting edge rake face and serves as the rake face of a corner edge. An intersection between a convex ridge line is located in a boundary between the rake faces of the end cutting edge and peripheral cutting edge. A convex ridge line is located in a boundary between the end cutting edge rake face and a bottom surface of the flute is moved into the side of the rotation axis in the radial direction with respect to a boundary between the flank face of a corner edge and the flank face of the end cutting edge.

Abstract: A cutting tool including a substrate composed of a silicon nitride-based sintered body and a coating layer. The coating layer includes first, second, third and fourth layers. The first layer is located on the surface of the substrate and is composed of TiN having an average crystalline width of 0.1 to 0.4 ?m. The second layer is located on the first layer and composed of Al2O3 having an average crystalline width of 0.01 to 1.5 ?m. The third layer is located on the second layer and is composed of TiN having an average crystalline width of 0.01 to 0.1 ?m which is smaller than that of the first layer. The fourth layer is located on the third layer and is composed of Al2O3 having an average crystalline width of 0.01 to 1.5 ?m.

Abstract: Provided is an alumina sintered body which has a high heat conductivity and a high infrared ray emissivity and is excellent in electrical insulation property and chemical resistance. An alumina sintered body contains cubic aluminum nitride.

Abstract: Tool with optional wear-protection coating has, as an outer layer arranged on top of the substrate body or wear-protection coating, a single-layer wear-recognition layer (A) or a multilayer wear-recognition layer (B) comprising at least 4 individual layers arranged one above another, said layer or layers being produced by depositing elemental metals, metal alloys or electrically conductive metal compounds with a PVD process. Individual layer of (A) or at least one individual layer of (B) contain at least two different metals, the wear-recognition layer comprises a region produced by anodic oxidation from the upper surface down to a penetration depth that does not extend over the entire thickness of the wear-recognition layer, and the individual layer of (A) or the at least one individual layer of (B) has at least two different phases before the anodic oxidation and in the regions of the wear recognition layer that are not anodically oxidized.

Abstract: Hard-material-coated bodies composed of metal, cemented hard material, cermet or ceramic, coated with a TiSiCN composite layer or with a multilayer layer system which contains at least one TiSiCN composite layer. The TiSiCN composite layer is a nanocomposite layer which has been produced by a thermal CVD process without additional plasma excitation and contains a nanocrystalline phase composed of TiCxN1-x having a crystallite size in the range from 5 nm to 150 nm and a second phase composed of amorphous SiCxNy. The layer is characterized by a high hardness, a high oxidation and heat resistance and a high adhesive strength.

Abstract: A machining tool insert holder having a first surface, a second surface opposite the first surface, and a first insert tip slot extending between the first surface and the second surface. The first insert tip slot is configured to support a first insert tip. The insert holder further includes elevated projections extending from the first and second surfaces proximate the first insert tip slot.

Abstract: The present invention relates to a method of manufacturing a ceramic cutting insert, based on an oxide ceramic or a nitride ceramic or a mixed ceramic material, possibly containing whiskers, in a process comprising the powder metallurgical steps of providing a ready-to-press ceramic powder, pressing the ready-to-press powder into a compact of desired shape, sintering the compact to dense a ceramic blank followed by tumbling the ceramic blank, to remove sinter skin and provide an edge rounding.

Abstract: A method of making a dense diamond body comprises the steps of: forming a sintered polycrystalline diamond body with the use of a catalyst; forming voids in the body by removing at least some of the catalyst; and reducing the overall volume of voids by applying pressure and temperature to the body in a vessel substantially free of additional catalysts.

Abstract: A cBN tool that exhibits: excellent chipping resistance and wear resistance; and excellent cutting performance, for a long term use even in intermittent cutting work on high hardened steel is provided. The cutting tool includes a cutting tool body that is a cubic boron nitride-based material containing cubic boron nitride particles as a hard phase component. In the cutting tool, the cubic boron nitride particles includes an Al2O3 layer with an average layer thickness of 1.0-10 nm on a surface of the cubic boron nitride particles, a rift with an average rift formation ratio of 0.02-0.20 being formed in the Al2O3 layer, and the cubic boron nitride-based sintered material includes a binding phase containing at least one selected from a group consisting of: titanium nitride; titanium carbide; titanium carbonitride; titanium boride; aluminum nitride; aluminum oxide; inevitable products; and mutual solid solution thereof, around the cubic boron nitride particles.

Abstract: A cutting tool insert for machining by chip removal comprising a body of a hard alloy of cemented carbide, cermet, ceramics or cubic boron nitride based material onto which a hard and wear resistant coating is deposited by CVD, and the methods of making and using the same. The coating includes at least one ?-Al2O3 layer with a thickness between 0.5 ?m and 40 ?m having a {01-15} and/or {10-15} texture exhibiting excellent wear and metal cutting performance.

Abstract: Provided is a surface-coated cemented carbide insert obtained by containing at least WC powder and Co powder as raw materials, including a WC-based cemented carbide obtained by forming and sintering mixed raw materials containing at least any of (a) Zr compound powder, Nb compound powder, and Ta compound powder, (b) complex compound powder of Nb and Ta, and Zr compound powder, (c) complex compound powder of Nb, Ta, and Zr, (d) complex compound powder of Nb, Zr, and Ta compound powder, and (e) complex compound powder of Ta and Zr, and Nb compound powder, as essential powder components, as a substrate, and forming a hard coating layer on the substrate by vapor deposition, in which a Co enrichment surface region is formed in a substrate surface, Co content in the Co enrichment surface region satisfies to be between 1.30 and 2.10 (mass ratio) of Co content in cemented carbide.

Abstract: The present invention relates to a method of making a cemented carbide comprising mixing in a slurry a first powder fraction and a second powder fraction, subjecting the slurry to milling, drying, pressing and sintering. The first powder fraction is made from cemented carbide scrap recycled using the Zn recovery process, comprising the elements W, C, Co, and at least one or more of Ta, Ti, Nb, Cr, Zr, Hf and Mo, and the second powder fraction comprising virgin raw materials of WC and possibly carbides and/or carbonitrides of one or more of Cr, Zr, W, Ta, Ti, Hf and Nb. The first powder fraction is subjected to a pre-milling step, prior to the step of forming the slurry, to obtain an average grain size of between 0.2 to 1.5 ?m.

Abstract: It is an object of the present invention to provide a sintered cBN compact having excellent wear resistance and fracture resistance even in machining centrifugally cast iron having a property of being difficult to machine, and to provide a sintered cBN compact tool. A sintered cBN compact of the present invention contains 20% by volume or more and 65% by volume or less of cBN and, as a binder, 34% by volume or more and less than 80% by volume of Al2O3, at least one selected from the group consisting of nitrides, carbides, carbonitrides, borides, and boronitrides of Zr and solid solutions thereof (hereinafter, referred to as “X”), and ZrO2, the total amount of X and ZrO2 being 1.0% by volume or more and 6.0% by volume or less, the volume ratio of ZrO2 to Al2O3, ZrO2/Al2O3, being 0.010 or more and less than 0.100, in which the ratio Itetragonal ZrO2(101)/I?Al2O3(110) is 0.

Abstract: A surface-coated cutting tool with a body and hard coating layer is provided. (a) The hard coating layer is made of a complex nitride layer of Al and Cr. (b) The hard coating layer deposited on a region from a cutting edge to a location 100 ?m from the cutting edge toward an opposite side thereof has a granular crystal structure. The average grain size of granular crystals on a surface of the hard coating layer on the region is 0.2-0.5 ?m. The average grain size of granular crystals at an interface between the cutting tool body and the hard coating layer on the region is smaller than the average grain size on the surface the hard coating layer in an extent of 0.02-0.1 ?m. The crystal grain size length ratio of crystal grains whose size is 0.15-20% or less.

Abstract: A cutting tool includes a substrate composed of a cermet. The cermet includes a hard phase including compounds containing Ti, at least one metal other than Ti selected from groups 4, 5, and 6 of the periodic table, and at least one element of carbon and nitrogen, a binder phase including, as a main component, an iron group metal, and unavoidable impurities. At least one type of particles selected from alumina particles and zirconia particles with an average particle size of 0.5 ?m or more and 5 ?m or less is scattered over a surface of a rake face of the substrate, and the concentration of at least one element of aluminum and zirconium in the surface is 0.5 at % or more and 5 at % or less.

Abstract: A ceramic sintered body includes tungsten carbide, zirconia, and alumina. The content of the tungsten carbide is 20 to 50 vol %, and the content of the zirconia is 5 to 25 vol %. The crystal phase of the zirconia is a tetragonal crystal or a mixture of tetragonal and monoclinic crystals. The ceramic sintered body does not substantially include Ti compounds. The average particle diameter of the tungsten carbide, the average particle diameter of the zirconia, and the average particle diameter of the alumina are all 1 ?m or less.

Abstract: A coated cutting tool comprising substrate and a coating, wherein the coating comprises a layer of MTCVD TiCN, and a layer of ?-Al2O3, wherein the ?-Al2O3 layer exhibits an X-ray diffraction pattern, as measured using CuK? radiation, the (hkl) reflections used are (012), (104), (110), (113), (116), (300), (214) and (0 0 12), and the TC(0 0 12) is higher than 5 and a full width half maximum (FWHM) of a rocking curve peak of the (0 0 12) plane of the ?-Al2O3 is lower than 30°.

Abstract: A cutting tool made of cubic boron nitride-based sintered material that exhibits excellent chipping resistance and fracturing resistance in the intermittent cutting work on high hardness steel is provided. In the cutting tool, the average size of the cubic boron nitride particles is 0.5 to 8 ?m. A portion of the cubic boron nitride particles are coated with aluminum oxide films having an average thickness of 10 to 90 nm on surfaces thereof, and a rift is partially formed in the aluminum oxide film. The average rift formation ratio satisfies the formula 0.02?h/H?0.08, wherein h is a breadth of the rift of the aluminum oxide film and H is a girth of the particle of cubic boron nitride.

Abstract: There is provided a joined product suitable as a cutting tool that is fit for high-speed cutting, CVD coating process and the like, and does not cause a reduction in joint strength of a joining layer even if a high temperature exceeding a temperature at which a brazing filler forms the liquid phase is reached during cutting. Specifically, the joined product includes a cemented carbide sintered compact serving as a first material to be joined and a cBN sintered compact or a diamond sintered compact serving as a second material to be joined. The first material to be joined and the second material to be joined are joined by a joining material that does not form a liquid phase at a temperature lower than 1000° C. and that is placed between the first material to be joined and the second material to be joined. The joining is performed by resistance heating and pressing at a pressure of 0.1 to 200 MPa.

Abstract: A surface-coated cutting tool with a hard coating layer exhibits excellent chipping resistance and wear resistance in a high-speed cutting process. The surface-coated cutting tool comprises a lower layer consisting of a titanium compound layer and an upper layer consisting of an aluminum oxide layer deposited on a surface of a tool substrate constituted of a tungsten carbide-based cemented carbide as a hard coating layer. In the upper layer, a (006) plane texture coefficient TC(006) is 1.8 or more, a ratio I(104)/I(110) of a peak intensity I(104) of an (104) plane to a peak intensity I(110) of an (110) plane is in a range of 0.5 to 2.0, and furthermore, an absolute value of a residual stress in the aluminum oxide layer is 100 MPa or less.

Abstract: The present invention provides a coated cutting tool comprising a substrate and a coating, where the coating comprises at least one compound layer deposited by cathodic arc deposition, which has a thickness of 10-30 ?m characterized in that the coating has internal stress ranges from low tensile stresses, lower than 0.2 GPa, to compressive stresses, lower than 3 GPa.

Abstract: A diamond coated tool according to the present invention includes a base material, and a diamond layer coating a surface of the base material, the diamond layer containing a diamond, 1.0×1018 to 1.0×1022 atoms/cm3 of boron, and 1.0×1017 to 1.0×1021 atoms/cm3 of nitrogen.