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US 2026/0253771 A1Published application
Insulator-Coated Soft Magnetic Powder, Dust Core, Magnetic Element And Electronic Device
AssigneeSeiko Epson Corporation
InventorMayu WATANABE
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Abstract
An insulator-coated soft magnetic powder includes: a soft magnetic powder formed of an Fe—Si—B—C-based amorphous alloy soft magnetic material; and an insulating coating that coats a surface of the soft magnetic powder and contains a phosphate-based glass; wherein the average particle diameter is 15.0 μm or more and 40.0 μm or less; the phosphate-based glass is a glass containing phosphorus oxide as a main component and containing Li; and the ratio Li/P of the content of Li to the content of P quantified by an elemental analysis method is 0.01 or more and 0.20 or less.
Claims8
An insulator-coated soft magnetic powder comprising:
- a soft magnetic powder formed of an Fe—Si—B—C-based amorphous alloy soft magnetic material;
- and
- an insulating coating that coats a surface of the soft magnetic powder and contains a phosphate-based glass;
- wherein the average particle diameter is 15.0 μm or more and 40.0 μm or less;
- the phosphate-based glass is a glass containing phosphorus oxide as a main component and containing Li;
- and
- the ratio Li/P of the content of Li to the content of P quantified by an elemental analysis method is 0.01 or more and 0.20 or less.
4 more elements
Dependencies are inferred from the claim text.