Ni—Zn—Cu ferrite particle, resin composition, and resin molding

Patent metadata

Field	Value
Publication number	US-10825593-B2
Application number	US-201716336644-A
Country	US
Kind code	B2
Filing date	Jun 7, 2017
Priority date	Sep 30, 2016
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

An object of the present invention is to provide ferrite particles having high saturation magnetisation and electrical resistivity, excellent in dispersibility in a resin, a solvent, or a resin composition; a rein composition containing the ferrite particles; and a resin molding composed of the resin composition. A Ni-Zn-Cu ferrite particle is in a single crystalline body having an average particle diameter of 1 to 2000 nm, has a polyhedral particle shape, and comprises 5 to 10 wt % of Ni, 15 to 30 wt % of Zn, 1 to 5 wt % of Cu, and 25 to 50 wt % of Fe.

First claim

The invention claimed is:

1. A Ni-Zn-Cu ferrite particle in a single crystalline body having an average particle diameter of 1 to 2000 nm, having a polyhedral particle shape, comprising 5 to 10 wt % of Ni, 15 to 30 wt % of Zn, 1 to 5 wt % of Cu, and 25 to 50 wt % of Fe.

2. A Ni-Zn-Cu ferrite particle in a single crystalline body having an average particle diameter of 1 to 2000 nm, having a polyhedral particle shape, comprising 5 to 10 wt % of Ni, 15 to 30 wt % of Zn, 1 to 5 wt % of Cu and 25 to 50 wt % of Fe;
wherein at least a portion of the Zn is segregated in the surface of the Ni-Zn-Cu ferrite particle as a ZN oxide.

3. The Ni-Zn-Cu ferrite particle according to claim 2 , wherein at least a portion of the Cu is segregated in the surface of the Ni-Zn-Cu ferrite particle as a Cu oxide.

4. The Ni-Zn-Cu ferrite particle of claim 2 , wherein a content of Zn has a peak in a region from the surface of the ferrite particles to a depth of 0.002 p.m.

5. A Ni-Zn-Cu ferrite particle in a single crystalline body having an average particle diameter of 1 to 2000 nm, having a polyhedral particle shape, comprising 5 to 10 wt % of Ni, 15 to 30 wt % of Zn, 1 to 5 wt % of Cu, and 25 to 50 wt % of Fe;
wherein at least a portion of the Cu is segregated in the surface of the Ni-Zn-Cu ferrite particle as a Cu oxide.

6. The Ni-Zn-Cu ferrite particle of claim 5 , wherein a content of Cu has a peak in a region from the surface of the ferrite particles to a depth of 0.002 p.m.

7. A resin composition comprising the Ni-Zn-Cu ferrite particle according to claim 1 as filler.

8. A resin molding comprising the resin composition according to claim 7 .

9. A resin composition comprising the Ni-Zn-Cu ferrite particle according to claim 2 as filler.

10. A resin molding comprising the resin composition according to claim 9 .

11. A resin composition comprising the Ni-Zn-Cu ferrite particle according to claim 5 as filler.

12. A resin molding comprising the resin composition according to claim 11 .

13. A resin composition comprising the Ni-Zn-Cu ferrite particle according to claim 3 as filler.

14. A resin molding comprising the resin composition according to claim 13 .

Assignees

• Powdertech Co Ltd

Inventors

• Kojima Takashi
• Ishii Kazutaka
• Sugiura Takao
• Igarashi Tetsuya
• Aga Koji

Classifications

• C01G53/82 Primary

  Compounds containing nickel, with or without oxygen or hydrogen, and containing two or more other elements · CPC title

• G03G9/1075

  Structural characteristics of the carrier particles, e.g. shape or crystallographic structure · CPC title

• G03G9/1085

  with non-ferrous metal oxide, e.g. MgO-Fe2O3 · CPC title

• H05K1/0313

  Organic insulating material · CPC title

• H01F1/375 Primary

  Flexible bodies · CPC title