# US 2017/0283933 A1 · Thermal spray slurry, thermal spray coating and method for forming thermal spray coating > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0283933 A1 - Document ID: US20170283933A1 - Status: Published application - Kind: A1 - Application number: 15/508,261 - Filed: 2015-09-03 - Published: 2017-10-05 - Earliest claimed: 2014-09-03 - Assignees: Fujimi Incorporated - Applicants: Fujimi Incorporated - Inventors: Hiroyuki IBE; Fumi SHINODA; Kazuyuki TSUZUKI - Web page: https://patentgrep.com/patent/US20170283933A1 ## CPC - C23C 4/134: Plasma spraying - C23C 4/06: Metallic material - C23C 4/08: containing only metal elements (C23C4/073 takes precedence) - C23C 4/10: Oxides, borides, carbides, nitrides or silicides; Mixtures thereof - C23C 4/11: Oxides - C23C 4/12: characterised by the method of spraying - C23C 4/129: Flame spraying - 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) ## Abstract This invention provides a thermal spray slurry capable of forming a favorable thermal spray coating. The thermal spray slurry comprises a dispersion medium and thermal spray particles formed of at least one material selected from the group consisting of a ceramic, a cermet and a metal. 800 mL of the thermal spray slurry contains A kg of the thermal spray particles; when 800 mL of the thermal spray slurry in which the thermal spray particles are dispersed is supplied at a flow rate of 35 mL/min to a horizontally-placed tube and collected, the collected slurry contains B kg of the thermal spray particles; and the slurry has a supply efficiency index If of 70% or higher, determined by the next equation If (%)=B/A×100. ## Claims ### Claim at position 1 -20. (canceled) ### Claim 21 A thermal spray slurry comprising a dispersion medium and thermal spray particles formed of at least one material selected from the group consisting of a ceramic, a cermet and a metal, wherein 800 mL of the thermal spray slurry contains A kg of the thermal spray particles; when 800 mL of the thermal spray slurry in which the thermal spray particles are dispersed is supplied at a flow rate of 35 mL/min to a horizontally-placed tube and collected, the collected slurry contains B kg of the thermal spray particles, the slurry has a supply efficiency index If of 70% or higher, determined by the next equation If (%)=B/A×100. ### Claim 22 (depends on 21) The thermal spray slurry according to claim 21 further comprising a dispersing agent. ### Claim 23 (depends on 21) The thermal spray slurry according to claim 21 wherein the thermal spray particle content is 10% by weight or higher, but 50% by weight or lower. ### Claim 24 (depends on 21) The thermal spray slurry according to claim 21 wherein the thermal spray particles have an average particle diameter of 0.01 μm or larger, but 10 μm or smaller. ### Claim 25 (depends on 21) The thermal spray slurry according to claim 21 having a viscosity of 1000 MPa·s or lower. ### Claim 26 (depends on 21) The thermal spray slurry according to claim 21 wherein the dispersion medium is an aqueous dispersion medium. ### Claim 27 (depends on 21) The thermal spray slurry according to claim 21 wherein the dispersion medium is a non-aqueous dispersion medium. ### Claim 28 (depends on 21) An article comprising a substrate and a thermal spray coating formed of a product of thermal spraying of the thermal spray slurry according to claim 21 on the substrate. ### Claim 29 (depends on 21) A method for forming a thermal spray coating by subjecting the thermal spray slurry according to claim 21 to thermal spraying. ### Claim 30 (depends on 29) The method for forming the thermal spray coating according to claim 29 wherein the thermal spray slurry is supplied to a thermal sprayer at a flow rate of 10 mL/min or higher, but 200 mL or lower. ### Claim 31 (depends on 29) The method for forming the thermal spray coating according to claim 29 wherein the thermal spray coating is formed by subjecting the thermal spray slurry to high velocity flame spraying or plasma spraying. ### Claim 32 (depends on 21) The method for forming the thermal spray coating according to claim 21, the method comprising supplying the thermal spray slurry to a thermal sprayer in an axial feed mode. ### Claim 33 (depends on 21) The method for forming the thermal spray coating according to claim 21, the method comprising supplying the thermal spray slurry to a thermal sprayer using two feeders, with the two feeders supplying the thermal spray slurry in amounts changing in oppositely-phased cycles. ### Claim 34 (depends on 21) The method for forming the thermal spray coating according to claim 21, the method comprising releasing the thermal spray slurry from feeders, temporarily storing it in a tank placed right before a thermal sprayer and supplying the thermal spray slurry to the thermal sprayer by allowing the slurry to naturally fall. ### Claim 35 (depends on 21) The method for forming the thermal spray coating according to claim 21, the method comprising supplying the thermal spray slurry through a conductive tube to a thermal sprayer. ### Claim 36 A thermal spray slurry prep material used for preparing a thermal spray slurry, wherein the thermal spray slurry comprises, as components, a dispersion medium and thermal spray particles formed of at least one species of material selected from the group consisting of a ceramic, a cermet and a metal; 800 mL of the thermal spray slurry contains A kg of the thermal spray particles; when 800 mL of the thermal spray slurry in which the thermal spray particles are dispersed is supplied at a flow rate of 35 mL/min to a horizontally-placed tube and collected, the collected slurry contains B kg of the thermal spray particles, the slurry has a supply efficiency index If of 70% or higher, determined by the next equation If (%)=B/A×100; and the slurry prep material comprises at least one component of the thermal spray slurry. ### Claim 37 (depends on 36) The thermal spray slurry prep material according to claim 36 further comprising information regarding preparation of the thermal spray slurry. ### Claim 38 (depends on 36) The thermal spray slurry prep material according to claim 36 wherein the at least one component comprises the thermal spray particles. ### Claim 39 (depends on 38) The thermal spray slurry prep material according to claim 38 wherein the at least one component comprises the thermal spray particles and at least a portion of the dispersion medium. ### Claim 40 (depends on 36) The thermal spray slurry prep material according to claim 36 further comprising a dispersing agent.