US 12,440,892 B2 · Soft magnetic alloy powder, soft magnetic sintered body, and coil-type electronic component

Abstract

A soft magnetic metal powder or the like from which a soft magnetic metal fired body can be provided has a high magnetic permeability μ and a specific resistance ρ and is contained in a coil-type electronic component having sufficiently high inductance L and Q value and unlikely to be plating-extended and short-circuited. A soft magnetic metal powder contains soft magnetic metal particles containing at least Fe and Ni. Said soft magnetic metal powder further contains P, Si, Cr and/or M. M is at least one selected from among B, Co, Mn, Ti, Zr, Hf, Nb, Ta, Mo, Mg, Ca, Sr, Ba, Zn, Al, and rare earth elements. The content of each element is within a predetermined range.

Claims12

Dependent claims

A soft magnetic metal powder comprising soft magnetic metal particles each constituted by a Fe—Ni—Si-M based alloy, wherein

the Fe—Ni—Si-M based alloy further includes P;
M is one or more selected from B, Co, Mn, Ti, Zr, Hf, Nb, Ta, Mo, Mg, Ca, Sr, Ba, Zn and rare earth elements;
and
the Fe—Ni—Si-M based alloy includes 15.0 mass % or more and 55.0 mass % or less of Ni, 2.0 mass % or more and 6.0 mass % or less of Si, 2.0 mass % or more and 40.0 mass % or less of M, and 100 ppm or more and 5000 ppm or less of P with respect to 100 mass % of a total amount of Fe, Ni, Si, and M.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

17/760,951Filed 25 Sep 2020

Priority

JP 2019-17620626 Sep 2019

Published

US 2022/0336128 A120 Oct 2022

Granted

14 Oct 2025

Term ends

Not estimatedThe source records don’t support an estimate.

Classification25 codes

B22F 3/00
Manufacture of workpieces or articles from metallic powder characterised by the manner
B22F 1/05
Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties: metallic powder characterised by the size or…
B22F 1/10
Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties: metallic powder containing lubricating or…
B22F 1/16
Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties: metallic particles coated with a non-metal

Soft magnetic alloy powder, soft magnetic sintered body, and coil-type electronic component

Life of this patent

Soft magnetic alloy powder, soft magnetic sintered body, and coil-type electronic component

Life of this patent

Abstract

Claims12