Iron nitride permanent magnet and technique for forming iron nitride permanent magnet

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United States of America Patent

PATENT NO 11742117
APP PUB NO 20180294078A1
SERIAL NO

16003428

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Abstract

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A permanent magnet may include a Fe16N2 phase constitution. In some examples, the permanent magnet may be formed by a technique that includes straining an iron wire or sheet comprising at least one iron crystal in a direction substantially parallel to a <001> crystal axis of the iron crystal; nitridizing the iron wire or sheet to form a nitridized iron wire or sheet; annealing the nitridized iron wire or sheet to form a Fe16N2 phase constitution in at least a portion of the nitridized iron wire or sheet; and pressing the nitridized iron wires and sheets to form bulk permanent magnet.

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Patent Owner(s)

Patent OwnerAddress
REGENTS OF THE UNIVERSITY OF MINNESOTA600 MCNAMARA ALUMNI CENTER 200 OAK STREET SE MINNEAPOLIS MN 55455-2020

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
He, Shihai Fremont, US 24 128
Jiang, Yanfeng Minneapolis, US 43 240
Wang, Jian-Ping Shoreview, US 94 795

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