Feedstock and heterogeneous structure for tough rare earth permanent magnets and production therefor

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United States of America Patent

PATENT NO 12205762
APP PUB NO 20190115128A1
SERIAL NO

16350215

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Abstract

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New types of particle feedstocks and heterogeneous grain structures are provided for rare earth permanent magnets (REPMs) and their production in a manner to significantly enhance toughness of the magnet with little or no sacrifice in the hard magnetic properties. The novel tough REPMs made from the feedstock have heterogeneous grain structures, such as bi-modal, tri-modal, multi-modal, laminated, gridded, gradient fine/coarse grain structures, or other microstructural heterogeneity and configurations, without changing the chemical compositions of magnets.

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Patent Owner(s)

  • IOWA STATE UNIVERSITY RESEARCH FOUNDATION, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cui, Baozhi Ames, US 12 165
Cui, Jun Ames, US 45 193

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