# US 2015/0147572 A1 · Cermet powder > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2015/0147572 A1 - Document ID: US20150147572A1 - Status: Published application - Kind: A1 - Application number: 14/402,013 - Filed: 2013-05-17 - Published: 2015-05-28 - Earliest claimed: 2012-05-21 - Assignees: Fujimi Incorporated - Applicants: Fujimi Incorporated - Inventors: Kazuto Sato; Hiroaki Hattori; Junya Yamada - Web page: https://patentgrep.com/patent/US20150147572A1 ## CPC - B22F 1/00: Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties - B22F 1/06: Metallic powder characterised by the shape of the particles (nanosized particles B22F1/054) - C22C 29/08: based on tungsten carbide - C23C 4/06: Metallic material - C23C 4/12: characterised by the method of spraying - C23C 24/04: Impact or kinetic deposition of particles - Y10T 428/2982: Particulate matter [e.g., sphere, flake, etc.] - 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) - 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) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A powder material of the present invention contains ceramic-metal composite particles, wherein at least a part of the composite particles exhibit no breaking point in a stress-strain diagram obtained by applying a compressive load that increases up to a maximum value of 10 mN or more at a loading rate of 15.0 mN/s or less. ## Claims ### Claim 1 A powder material comprising ceramic-metal composite particles, wherein at least a part of the composite particles exhibit no breaking point in a stress-strain diagram that is obtained by applying a compressive load that increases up to a maximum value of 10 mN or more at a loading rate of 15.0 mN/s or less. ### Claim 2 (depends on 1) The powder material according to claim 1, wherein the composite particles have a proportion of the composite particles exhibiting no breaking point of 10% or more. ### Claim 3 (depends on 1) The powder material according to claim 1, wherein the composite particles each include metal particle portions having an average diameter of 3 μm or less. ### Claim 4 (depends on 1) The powder material according to claim 1, wherein the composite particles each include metal particle portions and ceramic particle portions and have a ratio of an average diameter of the metal particle portions to an average diameter of the ceramic particle portions of less than 1.5. ### Claim 5 (depends on 1) The powder material according to claim 1, wherein the composite particles each include metal particle portions and ceramic particle portions and have a ratio of an average diameter of the metal particle portions to an average diameter of the ceramic particle portions of less than 1.5, and the average diameter of the metal particle portions is 3 μm or less. ### Claim 6 (depends on 1) The powder material according to claim 1, wherein the composite particles each include metal particle portions, and a ratio of an average diameter of the metal particle portions to an average diameter of the composite particles is 0.15 or less. ### Claim 7 (depends on 1) The powder material according to claim 1, wherein the composite particles have an aspect ratio of 1.30 or less. ### Claim 8 (depends on 1) The powder material according to claim 1, wherein the composite particles each include pores having a median diameter of 2.0 μm or less. ### Claim 9 (depends on 1) The powder material according to claim 1, wherein the composite particles have a porosity of 30% or less. ### Claim 10 (depends on 1) The powder material according to claim 1, wherein the powder material is used as a thermal spray powder. ### Claim 11 (depends on 10) The powder material according to claim 10, wherein the powder material is thermally sprayed at a thermal spraying temperature of 3,000° C. or lower. ### Claim 12 (depends on 1) A method for forming a thermal spray coating, comprising thermally spraying the powder material according to claim 1 at a thermal spraying temperature of 3,000° C. or lower. ### Claim 13 (depends on 1) The powder material according to claim 1, wherein the at least a part of the composite particles exhibit no breaking point in a stress-strain diagram that is obtained by applying a compressive load that increases up to a maximum value of 100 mN or more at a loading rate of 15.0 mN/s or less. ### Claim 14 (depends on 1) The powder material according to claim 1, wherein the composite particles each include ceramic particle portions containing at least one selected from tungsten carbide, chromium carbide, molybdenum boride, chromium boride, and aluminum nitride. ### Claim 15 (depends on 1) The powder material according to claim 1, wherein the composite particles each include metal particle portions having a face-centered cubic lattice structure or a body-centered cubic lattice structure. ### Claim 16 A powder material comprising ceramic-metal composite particles, wherein at least 10% of the composite particles exhibit no breaking point in a stress-strain diagram that is obtained by applying a compressive load that increases up to a maximum value of 200 mN or more at a loading rate of 15.0 mN/s or less, the composite particles each include ceramic particle portions containing tungsten carbide and metal particle portions containing cobalt, nickel, iron, or chromium, the composite particles have a ratio of an average diameter of the metal particle portions to an average diameter of the ceramic particle portions of less than 1, the average diameter of the metal particle portions is 1 μm or less, a ratio of the average diameter of the metal particle portions to the average diameter of the composite particles is 0.1 or less, and the composite particles each include pores having a median diameter of 2.0 μm or less.