SAMARIUM-COBALT MAGNETS AND METHOD FOR PREPARING THE SAME

The present invention provides a samarium-cobalt magnet and a method for preparing the same. The method comprises mixing an alloy powder with a zirconium powder in an amount of 0.1-0.35 wt% of the weight of the alloy powder to form a mixture. The alloy powder is formed from 10.5-13.5 wt% of samarium...

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Main Authors WU, Zhimin, FAN, Yuelin, YUAN, Yi, DIAO, Shulin, YUAN, Bo, YUAN, Wenjie, SU, Jianyun, CHEN, Ya, LIU, Xin, ZHANG, Bingjun, DONG, Yi
Format Patent
LanguageEnglish
French
German
Published 24.02.2021
Subjects
ALLOYS
BASIC ELECTRIC ELEMENTS
CHEMISTRY
ELECTRICITY
FERROUS OR NON-FERROUS ALLOYS
INDUCTANCES
MAGNETS
METALLURGY
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:The present invention provides a samarium-cobalt magnet and a method for preparing the same. The method comprises mixing an alloy powder with a zirconium powder in an amount of 0.1-0.35 wt% of the weight of the alloy powder to form a mixture. The alloy powder is formed from 10.5-13.5 wt% of samarium, 12.5-15.5 wt% gadolinium, 50-55 wt% of cobalt, 13-17 wt% of iron, 4-10 wt% of copper, and 2-7 wt% of zirconium. The method brings about at low costs a samarium-cobalt magnet having a positive temperature coefficient of remanence.
Bibliography:Application Number: EP20200152208