Title:
MANUFACTURING METHOD FOR RARE EARTH TRANSITION METAL ALLOY POWDER
Document Type and Number:
Japanese Patent JP2023138344
Kind Code:
A
Abstract:
To provide a manufacturing method for rare earth transition metal alloy powder with low oxygen content and high quality.SOLUTION: A manufacturing method for rare earth transition metal alloy powder includes: a reduction step of obtaining a reaction product containing a rare earth transition metal alloy and a byproduct derived from the reducing agent by applying a heat treatment under a non-oxidizing atmosphere to a mixture containing at least an alloying material containing a rare earth metal, transition metal components and oxygen, and a reducing agent; and a wet treatment step of obtaining a rare earth transition metal alloy powder by applying a washing process to the reaction product, where during the washing process, the reaction products are fed into the cleaning solution to obtain an alloy powder slurry, the resulting alloy powder slurry is subjected to an acid cleaning process, and the alloy powder slurry after acid cleaning is subjected to a chelation process by adding a chelating agent.SELECTED DRAWING: Figure 1
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Inventors:
ISHIKAWA TAKASHI
HYODO KAZUSHIGE
HYODO KAZUSHIGE
Application Number:
JP2023016361A
Publication Date:
October 02, 2023
Filing Date:
February 06, 2023
Export Citation:
Assignee:
SUMITOMO METAL MINING CO
International Classes:
B22F9/20; B22F1/00; C22C1/04; H01F1/057; H01F1/059; H01F1/06
Attorney, Agent or Firm:
Masayuki Shobayashi
Kazuyoshi Hayashi
Kazuyoshi Hayashi
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