# US 9,434,002 B2 · Evaporating material and method of manufacturing the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,434,002 B2 - Document ID: US9434002B2 - Status: Granted - Kind: B2 - Application number: 14/042,935 - Filed: 2013-10-01 - Published: 2014-01-30 - Granted: 2016-09-06 - Earliest claimed: 2008-10-08 - Assignees: Ulvac, Inc. - Applicants: Ulvac, Inc. - Inventors: Hiroshi Nagata; Yoshinori Shingaki; Youichi Hirose; Kyoutoshi Miyagi - Web page: https://patentgrep.com/patent/US9434002B2 ## CPC - B22D 23/04: Casting by dipping (hot-dipping or immersion processes for applying coating material in the molten state without affecting the shape C23C2/00) - C21D 1/72: during chemical change of surfaces - C21D 6/00: Heat treatment of ferrous alloys - C23C 2/04: characterised by the coating material - H01F 41/0293: {diffusion of rare earth elements, e.g. Tb, Dy or Ho, into permanent magnets} - Y10T 428/12361: having aperture or cut - B22D: CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES (shaping of plastics or substances in a plastic state B29C; metallurgical processing, selection of substances to be added to metal C21, C22) - C21D: MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING (surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by this subclass C23F17/00; unidirectional solidification of eutectic materials or unidirectional demixing of eutectoid materials C30B) - 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) - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract There is provided an evaporating material of thin plate shape which can be manufactured at a reduced cost and at high productivity, the evaporating material being adapted for use in enhancing the coercive force of neodymium-iron-boron sintered magnet by heat treatment while evaporating Dy in vacuum or in reduced-pressure inert gas atmosphere. The evaporating material of this invention has a core member 1a made of a fire-resistant metal having a multiplicity of through holes, and is made by melting a rare-earth metal or an alloy thereof so as to get adhered to, and solidified on, the core member. In this case, the above-mentioned adhesion is performed by dipping the core member into a molten bath of the rare-earth metal or an alloy thereof, and pulling it out of the molten bath. ## Claims ### Claim 1 A method of manufacturing an evaporating material comprising the steps of: forming a solidified body of a rare-earth metal or of an alloy thereof by melting the rare-earth metal or the alloy thereof, by dipping a base member made of a fire-resistant metal into a molten bath of the rare-earth metal or of the alloy thereof in a state of maintaining the base member at a temperature below the melting temperature of the rare-earth metal or the alloy thereof, and thereafter by pulling up the base member to thereby form on a surface of the base member the solidified body; detaching the solidified body off from the base member; and working the solidified body thus detached into a plate shape. ### Claim 2 (depends on 1) The method of manufacturing the evaporating material according to claim 1, wherein the base member is columnar shape or prismatic shape. ### Claim 3 (depends on 1) The method of manufacturing the evaporating material according to claim 1, further comprising increasing or decreasing the time of dipping the base member into the molten bath, thereby controlling a thickness of the solidified body. ### Claim 4 (depends on 1) The method of manufacturing the evaporating material according to claim 1, further comprising changing the temperature of the base member when dipping the base member into the molten bath, thereby controlling the thickness of the solidified body. ### Claim 5 (depends on 1) The method of manufacturing the evaporating material according to claim 1, wherein the rare-earth metal is a member selected from the group consisting of terbium, dysprosium, and holmium. ### Claim 6 (depends on 1) The method of manufacturing the evaporating material according to claim 1, wherein the fire-resistant metal is a member selected from the group consisting of niobium, molybdenum, tantalum, titanium, vanadium, and tungsten. ### Claim 7 (depends on 1) The method of manufacturing the evaporating material according to claim 1, wherein the working includes cutting, rolling, or pressing.