# US 11,992,883 B2 · Coated tool and cutting tool > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,992,883 B2 - Document ID: US11992883B2 - Status: Granted - Kind: B2 - Application number: 17/273,736 - Filed: 2019-09-03 - Published: 2021-06-24 - Granted: 2024-05-28 - Earliest claimed: 2018-09-05 - Assignees: KYOCERA Corporation - Applicants: Kyocera Corporation - Inventors: Tadashi Katsuma - Web page: https://patentgrep.com/patent/US11992883B2 ## CPC - B23B 27/148: {Composition of the cutting inserts} - C23C 16/45523: {Pulsed gas flow or change of composition over time} - B22F 5/00: Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product - B22F 5/10: of articles with cavities or holes, not otherwise provided for in the preceding subgroups - C23C 16/36: Carbonitrides - C23C 16/403: {of aluminium, magnesium or beryllium} - C23C 28/044: {coatings specially adapted for cutting tools or wear applications} - C23C 30/005: {on hard metal substrates} - B22F 2003/242: {Coating} - B22F 2005/001: {Cutting tools, earth boring or grinding tool other than table ware} - B22F 2302/10: Carbide - B22F 2998/10: Processes characterised by the sequence of their steps - B22F 2999/00: Aspects linked to processes or compositions used in powder metallurgy - B23B 2228/10: Coatings - C22C 29/08: based on tungsten carbide - B23B: TURNING; BORING (arrangements for copying or controlling B23Q) - C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04) - B22F: WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER (making alloys by powder metallurgy C22C); APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER - C22C: ALLOYS (treatment of alloys C21D, C22F) ## 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 μm 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. ## Claims ### Claim 1 A coated tool, comprising: a base member comprising a first surface; and a coating layer located on the first surface, wherein the base member comprises a hard phase with tungsten carbide particles, and a binder phase comprising cobalt, nickel, or combinations thereof; island portions each comprising 70 area % or more of the binder phase and having an equivalent circle diameter of 10 μm or more are scattered on the first surface; the coating layer comprises: a first layer comprising a titanium compound and located on the first surface, and a second layer comprising aluminum oxide and located on and in contact with the first layer; and the coating layer comprises a plurality of voids located on the first layer in a cross section orthogonal to the first surface so as to be arranged side by side in a direction along a boundary between the first layer and the second layer; an average value of widths of respective voids of the plurality of voids in the direction along the boundary is less than an average value of distances between the respective voids adjacent to each other; and in the cross section orthogonal to the first surface, an average value of widths of the respective voids in a direction parallel to the first surface is greater than an average value of heights of the respective voids in a direction orthogonal to the first surface. ### Claim 2 (depends on 1) The coated tool according to claim 1, wherein the first layer further comprises titanium carbonitride, and the second layer further comprises a-alumina. ### Claim 3 (depends on 1) The coated tool according to claim 1, wherein in the cross section orthogonal to the first surface, an average value of distances from the respective voids to the boundary is greater than an average value of heights of the respective voids in a direction orthogonal to the first surface. ### Claim 4 (depends on 1) The coated tool according to claim 1, wherein in the cross section orthogonal to the first surface, an average value of distances from the respective voids to the boundary is greater than an average value of distances between the respective voids adjacent to each other in a direction parallel to the first surface. ### Claim 5 (depends on 1) A cutting tool comprising: a holder comprising a bar shape which extends from a first end to a second end and comprises a pocket located at a side of the first end; and the coated tool according to claim 1, which is located at the pocket. ### Claim 6 (depends on 3) The coated tool according to claim 3, wherein, in each void of the plurality of voids, a distance from the void to the boundary is greater than a height of the void in a direction orthogonal to the first surface in the cross section orthogonal to the first surface. ### Claim 7 (depends on 1) The coated tool according to claim 1, wherein the first layer comprises a plurality of regions, each having a different composition, with the plurality of regions laminated one on another, the plurality of regions comprises: a first region, a second region located on the first region, and an intermediate region located between the first region and the second region; and the plurality of voids are located in the intermediate region. ### Claim 8 (depends on 7) The coated tool according to claim 7, wherein the first region is a moderate temperature TiCN, and the second region is a high temperature TiCN. ### Claim 9 (depends on 1) The coated tool according to claim 1, wherein in the cross section orthogonal to the first surface, the average value of widths of the voids in a direction parallel to the first surface is w1 , and the average value of heights of the voids in a direction orthogonal to the first surface is h1, and a ratio w1/h1 is greater than 1.2.