Problems of Development of Mim Technology in Russia as Applied to Production of Permanent Magnets

Main problems arising in installation of novel processes of production of permanent magnets based on the Fe – Cr – Co and Sm – Co systems are presented. The technological possibilities of production of permanent magnets from an alloy of the Fe – Cr – Co system by methods of MIM technology and powder...

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Published inMetal science and heat treatment Vol. 61; no. 9-10; pp. 559 - 562
Main Authors Baydarov, S. Yu, Kamynin, A. V., Kraposhin, V. S., Chernyshev, D. L.
Format Journal Article
LanguageEnglish
Published New York Springer US 2020
Springer
Springer Nature B.V
Subjects
Characterization and Evaluation of Materials
Chemistry and Materials Science
Chromium
Classical Mechanics
Cobalt
Coercivity
Engineering Thermodynamics
Granulation
Heat and Mass Transfer
Iron
Magnetic properties
Magnetism
Magnets, Permanent
Materials Science
Metal products
Metallic Materials
Permanent magnets
Powder metallurgy
Powders
Precision Alloys
Production processes
magnetic characteristics
MIM technology
high-coercivity alloys
permanent magnets
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Summary:Main problems arising in installation of novel processes of production of permanent magnets based on the Fe – Cr – Co and Sm – Co systems are presented. The technological possibilities of production of permanent magnets from an alloy of the Fe – Cr – Co system by methods of MIM technology and powder metallurgy are described. Methods of MIM-technology with the use of domestic granulate are used to fabricate permanent magnets based on alloy 25Kh15KA (Fe – Co – Cr system) with residual induction B r = 1.12 T, maximum energy product ( BH ) max = 23.0 kJ/m 3 and coercivity H cB = 39.7 kA/m.
ISSN:0026-0673
1573-8973
DOI:10.1007/s11041-020-00461-z