Solid state grain alignment of permanent magnets in near-final shape

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United States of America Patent

PATENT NO 10851446
APP PUB NO 20170283893A1
SERIAL NO

15530951

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Abstract

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Magnet microstructure manipulation in the solid state by controlled application of a sufficient stress in a direction during high temperature annealing in a single-phase region of heat-treatable magnet alloys, e.g., alnico-type magnets is followed by magnetic annealing and draw annealing to improve coercivity and saturation magnetization properties. The solid-state process can be termed highly controlled abnormal grain growth (hereafter AGG) and will make aligned sintered anisotropic magnets that meet or exceed the magnetic properties of cast versions of the same alloy types.

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Patent Owner(s)

Patent OwnerAddress
IOWA STATE UNIVERSITY RESEARCH FOUNDATION INC1805 COLLABORATION PLACE SUITE 2100 AMES IA 50010

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Anderson, Iver E Ames, US 64 935
Dennis, Kevin W Ames, US 11 90
Kassen, Aaron G Ames, US 4 0
Kramer, Matthew J Ankeny, US 7 5
White, Emma Marie Hamilton Ames, US 5 0

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