METHOD FOR MANUFACTURE OF PERMANENT MAGNETS FROM RARE-EARTH METALS Russian patent published in 2008 - IPC H01F1/57 B22F3/12 

Abstract RU 2321913 C2

FIELD: powder metallurgy, in particular, manufacture of high-coercive field permanent magnets based on alloys of rare-earth-metals such as iron-boron.

SUBSTANCE: method involves producing alloy-admixture based on niobium-cobalt system containing 10-15 wt% of cobalt; grinding each alloy for obtaining of powder; providing mixing and fine milling of powders; introducing alloy-admixture at fine milling stage in an amount of 0.1-0.2 wt%; compacting resulted mixture in magnetic field and caking. Method allows caked magnets to be produced, said magnets having high coercive field and insignificantly reduced magnetic induction.

EFFECT: increased efficiency in producing of high-coercive field magnets.

5 cl, 1 dwg, 1 tbl

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RU 2 321 913 C2

Authors

Nazarova Natal'Ja Valer'Evna

Filenov Aleksandr Ivanovich

Afanas'Ev Andrej Aleksandrovich

Krutovskaja Irina Alekseevna

Sakhipov Oleg Revkad'Evich

Menushenkov Vladimir Pavlovich

Savchenko Aleksandr Grigor'Evich

Dates

2008-04-10Published

2005-11-30Filed