Flat soft magnetic powder and production method therefor
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United States of America Patent
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Oct 13, 2020
Grant Date -
Sep 7, 2017
app pub date -
Feb 28, 2017
filing date -
Mar 1, 2016
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Abstract
Provided is a flaky soft magnetic powder composed of an Fe—Si—Al alloy containing Si: 5.5 to 10.5 mass %, Al: 4.5 to 8.0 mass %, and Fe and incidental impurities: balance, wherein the flaky powder exhibits a ratio (D50/TD) of 35 to 92 where D50 represents the average particle size (μm) of the powder and TD represents the tap density (Mg/m3) of the powder, and the flaky powder exhibits a coercive force of 239 to 479 A/m as measured under application of a magnetic field in an in-plane direction of the flaky powder. The flaky soft magnetic powder exhibits superior sheet formability and has high magnetic permeability.
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