A surface-coated cutting tool includes a substrate and a coating film that coats the substrate, wherein the coating film includes a WC.sub.1-x layer composed of a compound represented by WC.sub.1-x, where x is more than or equal to 0.54 and less than or equal to 0.58, the compound represented by WC.sub.1-x includes a hexagonal crystal structure, and a ratio 1(110)/1(011) of an X-ray diffraction intensity of a (110) plane to an X-ray diffraction intensity of a (011) plane in the WC.sub.1-x layer is more than or equal to 0.1 and less than or equal to 0.4.

A surface-coated cutting tool includes a base material and a coating film formed on a surface of the base material. The coating film includes a first alternating layer and a second alternating layer formed on the first alternating layer. The first alternating layer includes first and second layers. The second alternating layer includes third and fourth layers. One or a plurality of the first layers and one or a plurality of the second layers are layered alternately, and one or a plurality of the third layers and one or a plurality of the fourth layers are layered alternately.

According to the present disclosure, a coated member is provided with a base material and a diamond layer located on the base material. When a ratio (SP3/SP2) obtainable from an SP3 peak derived from diamond crystals measurable by Raman spectroscopy and an SP2 peak derived from a graphite phase is referred to as an SP3 ratio, an SP3 ratio at a first measuring point with a thickness up to 1 m extending from an interface of the base material and the diamond layer toward the diamond layer is higher than an SP3 ratio at a second measuring point that is intermediate in a thickness direction of the diamond layer.

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 (2,1,10) of a (2,1,10) plane is 1.4 or more. $ TC ( 2 , 1 , 10 ) = I ( 2 , 1 , 10 ) I 0 ( 2 , 1 , 10 ) { 1 8 .Math. I ( h , k , l ) I 0 ( h , k< SURFACE-COATED CUTTING TOOL 20200114431 · 2020-04-16 · Sumitomo Electric Industries, Ltd. · Sachiko KOIKE, Yuki UEDA, Keiichi TSUDA A surface-coated cutting tool includes a substrate and a coating film that coats the substrate, wherein the coating film includes a WC.sub.1-x layer composed of a compound represented by WC.sub.1-x, where x is more than or equal to 0.54 and less than or equal to 0.58, and the compound represented by WC.sub.1-x includes a hexagonal crystal structure. Surface coated cutting tool and method for manufacturing the same 10603726 · 2020-03-31 · Sumitomo Electric Hardmetal Corp. · Satoshi Ono, Shinya Imamura, Takanori Detani, Anongsack Paseuth 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<XR0.9, 0.65<XF0.9, 0.4XE0.7, XRXE0.2, and XFXE0.2 being satisfied, with a composition of the TiAlN layer in a cutting edge region located in the cutting edge being expressed as Ti.sub.1-XEAl.sub.XEN, a composition thereof in a rake face region located in the rake face being expressed as Ti.sub.1-XRAl.sub.XRN, and a composition thereof in a flank face region located in the flank face being expressed as Ti.sub.1-XFAl.sub.XFN. TOOL 20200094330 · 2020-03-26 · OSG CORPORATION · Hiroyuki HANYU, Yasuo Fukui To provide a tool that ensures improved durability even when a diamond coating containing boron is formed. A diamond coating (40) includes a first layer (41) that is formed as a layer on a surface layer side of the diamond coating (40) and is regarded as containing no boron, and a second layer (42) positioned on a side of a base material (30) with respect to the first layer (41) and contains at least 1000 ppm or more of the boron. Since the first layer (41) with a larger compressive stress is formed on the surface layer of the diamond coating (40), a crack generation from the surface layer side of the diamond coating (40) during the process can be reduced. Consequently, the durability of a tool (1) can be improved even when the diamond coating (40) containing 1,000 ppm or more of boron is formed. TOOL AND COATED TOOL 20200078868 · 2020-03-12 · Tungaloy Corporation · Yusuke HIRANO, Yuichiro FUKUSHIMA A tool having a cutting edge that includes a sintered body containing cubic boron nitride. The sintered body integrally and inseparably includes an inner region and a binder phase enriched layer formed on at least part of a surface of the inner region. The inner region includes: 15-90 volume % of cubic boron nitride; and 10-85 volume % of a mixture of a binder phase and impurities. The binder phase enriched layer includes: 90-100 volume % of the binder phase and impurities mixture; and 0-10 volume % of cubic boron nitride; and the binder phase contains at least one kind selected from the group consisting of: at least one element selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Al, Co, Ni and Si; and a compound of the element and at least one element selected from the group consisting of C, N, O and B. COATED CUTTING TOOL 20200070253 · 2020-03-05 · Tungaloy Corporation · Naoyuki FUKUSHIMA A coated cutting tool comprising a substrate and a coating layer formed on a surface of the substrate, wherein: the coating layer comprises a lower layer, an intermediate layer and an upper layer, the lower layer, the intermediate layer and the upper layer being laminated in order from the substrate side toward a surface side of the coating layer; the lower layer comprises a Ti compound layer; the intermediate layer contains -Al.sub.2O.sub.3; the upper layer contains TiCN; an average thickness of each of the lower layer, the intermediate layer, and the upper layer is within a specific range; a ratio of a length of 3 grain boundaries to a total 100% length of all grain boundaries in a specific region of the upper layer is from 20% or more to 60% or less; and a ratio of (111)-oriented grains in the upper layer is 30 area % or more. Surface-coated cutting tool 10569339 · 2020-02-25 · Mitsubishi Materials Corporation · Kazuaki Senbokuya, Masakuni Takahashi, Tsuyoshi Ogami, Tatsuo Hashimoto 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 (Al.sub.1-x-yCr.sub.xSi.sub.y)(C.sub.zN.sub.1-z) where x, y and z are atomic ratios and satisfy 0.1x0.4, 0.01y0.2, and 0z0.3, 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. $