Abstract: To provide a piston ring comprising a hard carbon film that is easy to form and exhibits excellent wear resistance. The above-described problem is solved by having a hard carbon film 4 formed on at least an outer peripheral sliding surface 11 of a piston ring base material 1, wherein the hard carbon film 4 is a laminated film comprising a plurality of layers, and is configured so as to contain boron within a range of an atomic density of 0.2×1022 atoms/cm3 to 2.0×1022 atoms/cm3 inclusive. This hard carbon film 4 may be configured to have an sp2 component ratio within a range of 40% to 80% inclusive, measured in a TEM-EELS spectrum formed by combining electron energy loss spectroscopy (EELS) with a transmission electron microscope (TEM), and a hydrogen content within a range of 0.1 atom % to 5 atom % inclusive. Further, a total thickness of this hard carbon film 4 may be configured to be within a range of 0.5 ?m to 20 ?m inclusive.

Abstract: A solid carbide milling cutter has a substrate of hard metal and a multi-layer coating deposited at least to surface regions that contact a workpiece during a milling operation. The multi-layer coating includes a single-layer or a multi-layer functional layer deposited directly on the substrate surface and a single-layer or a multi-layer covering layer deposited on the functional layer. The functional layer has one or more layers of TixAl1-xN with 0.3?x?0.55. The covering layer has one or more layers of ZrN. The functional layer and the covering layer are deposited by HIPIMS, wherein during the deposition of the functional layer power pulses are applied to each sputtering target consisting of material to be deposited, which power pulses transfer an amount of energy to each sputtering target that exceeds a maximum power density in the pulse of ?500 W/cm2.

Abstract: Certain example embodiments of this invention relate to coated articles including noble metal (e.g., Ag) and polymeric hydrogenated diamond like carbon (DLC) (e.g., a-C:H, a-C:H:O) composite material having antibacterial and photocatalytic properties, and/or methods of making the same. A glass substrate supports a buffer layer, a matrix comprising the noble metal and DLC, a proton-conducting layer that may comprising zirconium oxide in certain example embodiments, and a layer comprising titanium oxide. The layer comprising titanium oxide may be photocatalytic and optionally may further include carbon and/or nitrogen. The proton-conducting layer may facilitate the creation of electron-hole pairs and, in turn, promote the antibacterial properties of the coated article. The morphology of the layer comprising titanium oxide and/or channels formed therein may enable Ag ions produced from matrix to migrate therethrough.

Abstract: The invention relates to a coated body and to a method for coating a body. The coated body comprises at least a substrate (22), a diamond layer (24) having a thickness of 1-40 ?m, and a hard material layer (26), which is arranged farther outside on the body (10) than the diamond layer (24). The hard material layer (26) comprises at least one metal element and at least one non-metal element. An adhesive layer (32) having a thickness of 2-80 nm is provided between the diamond layer (24) and the hard material layer (26). The adhesive layer (32) contains carbon and at least one metal element. The diamond layer (24) can be applied by means of a CVD method. The hard material layer can be applied by means of a PVD method.

Abstract: A coated cutting tool comprising a substrate and a coating layer formed on a surface of the substrate, the coating layer including at least one ?-type aluminum oxide layer, wherein, in the ?-type aluminum oxide layer, a texture coefficient TC (1,0,16) of a (1,0,16) plane is 1.4 or more. TC ? ( 1 , 0 , 16 ) = I ? ( 1 , 0 , 16 ) I 0 ? ( 1 , 0 , 16 ) ? { 1 8 ? ? I ? ( h , k , l ) I 0 ? ( h , k , l ) } - 1 ( 1 ) (In formula (1), I (h,k,l) denotes a peak intensity for an (h,k,l) plane in X-ray diffraction of the ?-type aluminum oxide layer, I0 (h,k,l) denotes a standard diffraction intensity for an (h,k,l) plane which is indicated on a JCPDS Card No. 10-0173 for ?-type aluminum oxide, and (h,k,l) refers to eight crystal planes of (0,1,2), (1,0,4), (1,1,0), (1,1,3), (0,2,4), (1,1,6), (2,1,4) and (1,0,16).

Abstract: A surface treatment for a metal substrate includes a nitride layer and a diamond-like carbon coating on said nitride layer. The metal substrate can be a titanium-containing substrate. The nitride layer and diamond-like carbon coating serve to improve the tribological properties of the metal substrate.

Abstract: A coated cutting tool comprising a substrate and a coating layer formed on a surface of the substrate, the coating layer including at least one ?-type aluminum oxide layer, wherein, in the ?-type aluminum oxide layer, a texture coefficient TC (1,2,11) of a (1,2,11) plane is 1.4 or more. TC ? ( 1 , 2 , 11 ) = I ? ( 1 , 2 , 11 ) I 0 ? ( 1 , 2 , 11 ) ? { 1 8 ? ? I ? ( h , k , l ) I 0 ? ( h , k , l ) } - 1 ( 1 ) (In formula (1), I (h,k,l) denotes a peak intensity for an (h,k,l) plane in X-ray diffraction of the ?-type aluminum oxide layer, I0 (h,k,l) denotes a standard diffraction intensity for an (h,k,l) plane which is indicated on a JCPDS Card No. 10-0173 for ?-type aluminum oxide, and (h,k,l) refers to eight crystal planes of (0,1,2), (1,0,4), (1,1,0), (1,1,3), (0,2,4), (1,1,6), (2,1,4) and (1,2,11).

Abstract: A surface coated cutting tool having surfaces including a rake face and a flank face and a cutting edge defined by a boundary portion between the rake face and the flank face includes a substrate and a coating which covers the surfaces of the substrate, the coating having a TiAlN layer having an NaCl type crystal structure, and relation of 0.65<XR?0.9, 0.65<XF?0.9, 0.4?XE?0.7, XR?XE?0.2, and XF?XE?0.2 being satisfied, with a composition of the TiAlN layer in a cutting edge region located in the cutting edge being expressed as Ti1-XEAlXEN, a composition thereof in a rake face region located in the rake face being expressed as Ti1-XRAlXRN, and a composition thereof in a flank face region located in the flank face being expressed as Ti1-XFAlXFN.

Abstract: A hard alloy includes complex carbonitride hard phases that contain Ti and at least one additional element, and a metal binder phase containing an iron group element as a main component element. The complex carbonitride hard phases include homogeneous composition hard phases where in-complex carbonitride hard phase average concentrations of Ti and the additional element have a difference of greater than or equal to ?5 atom % and less than or equal to 5 atom % from average concentrations of Ti and the additional element in all the complex carbonitride hard phases. On any cross section specified in the hard alloy, a cross-sectional area of the homogeneous composition hard phases accounts for greater than or equal to 80% of a cross-sectional area of the complex carbonitride hard phases, and the homogeneous composition hard phases account for greater than or equal to 80% of the complex carbonitride hard phases in number.

Abstract: A cemented carbide comprises particles including a tungsten carbide (WC) as a main component; a binder phase including cobalt (Co) as a main component; and particles including a carbide or a carbonitride of at least one selected from the group consisting of Group 4a, 5a, and 6a elements, or a solid solution thereof, wherein a cubic phase free layer (CFL), in which the carbide or the carbonitride is not formed, is formed from a surface of the cemented carbide to a depth of 5 ?m to 50 ?m.

Abstract: The invention relates to a process for coating an article (1), wherein a coating (2) having one or more coating layers (3, 4, 5) is applied to the article (1), wherein at least one coating layer (5) is formed essentially from aluminium, titanium and nitrogen, wherein the coating layer (5) has, at least in some regions, adjoining lamellae of different chemical composition and is deposited from a gas phase comprising at least one aluminium precursor and at least one titanium precursor. According to the invention, by setting a molar ratio of aluminium to titanium, the lamellae of different chemical composition are each formed with a cubic structure, it being possible for aluminium and titanium to be partly replaced by other metals and for nitrogen to be partly replaced by oxygen and/or carbon with retention of the cubic structure. The invention further relates to a correspondingly produced coating (2).

Abstract: A coated cutting tool comprising a substrate and a coating layer formed on a surface of the substrate is provided, the coating layer including an alternating laminate structure in which two or more compound layers of each of two or three or more kinds, each kind having a different composition, are laminated in an alternating manner, wherein: the alternating laminate structure is constituted by: a compound layer containing a compound having a composition represented by (TixM1-x)N [wherein M denotes an element of at least one kind selected from the group consisting of Zr, Hf, V, Nb, Ta, Cr, Mo, W, Al and Si, x denotes an atomic ratio of Ti based on a total of Ti and an element denoted by M, and x satisfies 0.57?x?0.

Abstract: A coated cutting tool includes a coating layer formed on a substrate. The coating layer includes an alternating laminate structure of two or more compound layers of each of two or more different compositions. One layer contains a compound having a composition (AlxM1-x)N, where atomic ratio x is 0.58 to 0.90; and another layer contains a compound having a composition (AlyM1-y)N, where atomic ratio y is 0.57 to 0.79. M is an element of at least one kind selected from Groups 4, 5, and 6 elements and Si. An absolute value of a difference between amounts of a specific metal element in the compound layers relative to amounts of the metal element respectively contained therein is between 0 and 5 atom %. An average thickness of each compound layer is from 1 to 50 nm. An average thickness of the alternating laminate structure is from 1.5 to 15 ?m.

Abstract: Provided is a cBN sintered material for a tool body in which a ratio (PNTB/PNBN) of the number (PNTB) of cBN particles in contact with a Ti boride having a long axis of 150 nm or more to the total number (PNBN) of cBN particles is 0.05 or less.

Abstract: A method of manufacturing a diamond by a vapor phase synthesis method includes: preparing a substrate including a diamond seed crystal; forming a light absorbing layer lower in optical transparency than the substrate by performing ion implantation into the substrate, the light absorbing layer being formed at a predetermined depth from a main surface of the substrate; growing a diamond layer on the main surface of the substrate by the vapor phase synthesis method; and separating the diamond layer from the substrate by applying light from a main surface of at least one of the diamond layer and the substrate to allow the light absorbing layer to absorb the light and cause the light absorbing layer to be broken up.

Abstract: To provide a piston ring comprising a hard carbon film that is easy to form and exhibits excellent adhesion and wear resistance, and a manufacturing method therefor. The above-described problem is solved by means of a piston ring comprising a hard carbon film 50 formed on at least an outer peripheral sliding surface 11 of a piston ring base material 1, wherein the hard carbon film 50 is a laminated film comprising a plurality of layers, including an upper layer 5 with a lamination pitch within a range of 3 nm to 50 nm inclusive, a middle layer 4 with a lamination pitch less than that of the upper layer 5, and a lower layer 3 with a lamination pitch within the same range as that of the upper layer 5 and greater than that of the middle layer 4.

Abstract: In one aspect, coatings are described herein employing composite architectures providing high aluminum content and high hardness for various cutting applications. For example, a coated cutting tool comprises a substrate and a coating comprising a refractory layer deposited by physical vapor deposition adhered to the substrate, the refractory layer comprising a plurality of sublayer groups, a sublayer group comprising a titanium aluminum nitride sublayer and an adjacent composite sublayer comprising alternating nanolayers of titanium silicon nitride and titanium aluminum nitride.

Abstract: In a surface-coated cutting tool, a hard coating includes one or more layers. At least one layer thereof is a hard coating layer composed of a complex nitride or carbonitride layer of Al, Cr, and Si and satisfying (Al1-x-yCrxSiy)(CzN1-z) where x, y and z are atomic ratios and satisfy 0.1?x?0.4, 0.01?y?0.2, and 0?z?0.3, respectively. The hard coating layer contains particles including: less than 10 atomic % of non-metal components selected from C and N; and metal components selected from Cr, Al and Si. In the cross-section perpendicular to the tool body surface, the number ratio of oblate particles with an Al content of 50 atomic % or less, a long diameter of less than 0.5 ?m, and an aspect ratio of 2.0 or more is 90% or more with respect to the total number of the particles.

Abstract: Cutting tools are described having coatings which can demonstrate desirable wear resistance and increased cutting lifetimes. A coated cutting tool described herein has a substrate and a coating with a plurality of alternating layers of a first layer of Al2O3 and a second layer of at least one of MeAl2O3 and MeAl2O3/MeO2 composite, wherein Me is Zr, Hf, Ti or a combination thereof. The coating has a superlattice-like structure.

Abstract: A coated cutting tool for chip forming machining of metals includes a substrate having a surface coated with a chemical vapour deposition (CVD) coating. The coated cutting tool has a substrate coated with a coating including a layer of ?-Al2O3, wherein the ?-Al2O3 layer exhibits a dielectric loss of 10?6?tan ??0.0025, as measured with AC at 10 kHz, 100 mV at room temperature of 20° C.