SOFT MAGNETIC FLAKY METAL POWDER, AND RESIN COMPOSITE SHEET AND RESIN COMPOSITE MOLDING COMPOUND USING SAME

Title:

SOFT MAGNETIC FLAKY METAL POWDER, AND RESIN COMPOSITE SHEET AND RESIN COMPOSITE MOLDING COMPOUND USING SAME

Document Type and Number:

WIPO Patent Application WO/2021/141140

Kind Code:

A1

Abstract:

Provided are: a soft magnetic flaky metal powder having high magnetic permeability and a modified temperature coefficient of magnetic permeability; and a resin composite sheet and a resin composite molding composition using this material. The soft magnetic flaky metal powder is characterized in that the temperature coefficient K of magnetic permeability of the soft magnetic flaky metal powder, which has the composition Fe-AI-Si, satisfies formulas (1), (2), and (3) within a range of –40°C to 85°C, and the coercivity thereof is 70 A/m or less. (1): K = (μ(0°C)–μ(–40°C))/μ(–40°C) > 0 (2): K = (μ(40°C)–μ(0°C))/μ(0°C) > 0 (3): K = (μ(85°C)–μ(40°C))/μ(40°C) > 0 K: Temperature coefficient, μ: magnetic permeability, (μ': real-number magnetic permeability, μ'': imaginary-number magnetic permeability) Also provided is a resin composite sheet characterized by being formed from the soft magnetic flaky metal powder and a resin, and having a coercivity of 80 A/m or less. Also provided is a resin composite composition for injection molding and extrusion molding.

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Inventors:

YASUI HIROSHI (JP)
HIKASA NOBUHIKO (JP)
NISHIYAMA SHINICHI (JP)
YUKUYOSHI NAOYA (JP)

Application Number:

PCT/JP2021/001391

Publication Date:

July 15, 2021

Filing Date:

January 08, 2021

Export Citation:

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Assignee:

MATE CO LTD (JP)

International Classes:

B22F1/00; B22F3/00; C22C38/00; H01F1/147; H01F1/20; H01F1/26

Domestic Patent References:

WO2018159610A1

2018-09-07

Foreign References:

JP2018022869A	2018-02-08
JP2009266960A	2009-11-12
JP2010196123A	2010-09-09
JP2002093612A	2002-03-29

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