Electronic component and method for manufacturing electronic component

Patent metadata

Field	Value
Publication number	US-2016276089-A1
Application number	US-201615070801-A
Country	US
Kind code	A1
Filing date	Mar 15, 2016
Priority date	Mar 19, 2015
Publication date	Sep 22, 2016
Grant date	—

Abstract

An electronic component includes a body made of an insulator, a coating film covering the body, a conductor located in the body, and outer electrodes each of which is connected to the conductor. The insulator contains a magnetic metal powder. The coating film is composed of resin and cations of a metal which is a cationic element contained in the insulator and which has a standard electrode potential E0 of less than about 0 V.

First claim

What is claimed is:

1 . An electronic component comprising:
a body made of an insulator; a coating film covering the body; a conductor located in the body; and outer electrodes each of which is connected to the conductor, wherein the insulator contains a magnetic metal powder and the coating film is composed of resin and cations of a metal which is a cationic element contained in the insulator and which has a standard electrode potential E0 of less than about 0 V.

2 . The electronic component according to claim 1 , wherein the metal having a standard electrode potential E0 of less than about 0 V includes at least one selected from the group consisting of Sn, Cr, Fe, Zn, Mn, Al, Mg, Ca, Ba, K, and Li.

3 . The electronic component according to claim 1 , wherein the metal having a standard electrode potential E0 of less than about 0 V includes at least one selected from the group consisting of Sn, Cr, Zn, Mn, Al, Mg, Ca, Ba, K, and Li in addition to Fe.

4 . The electronic component according to claim 1 , wherein the insulator contains a first powder which is the magnetic metal powder and which contains Fe and a second powder containing at least one selected from the group consisting of Sn, Cr, Zn, Mn, Al, Mg, Ca, Ba, K, and Li.

5 . The electronic component according to claim 1 , wherein the magnetic metal powder contains a particle covered by a coating and the coating contains at least one selected from the group consisting of Sn, Cr, Zn, Mn, Al, Mg, Ca, Ba, K, and Li.

6 . The electronic component according to claim 1 , wherein the magnetic metal powder is a powder of an alloy or solid solution of Fe with at least one selected from the group consisting of Sn, Cr, Zn, Mn, Al, Mg, Ca, Ba, K, and Li.

7 . The electronic component according to claim 1 , wherein the conductor is made of a metal having a standard electrode potential E0 of about 0 V or more.

8 . The electronic component according to claim 2 , wherein the conductor is made of a metal having a standard electrode potential E0 of about 0 V or more.

9 . The electronic component according to claim 3 , wherein the conductor is made of a metal having a standard electrode potential E0 of about 0 V or more.

10 . The electronic component according to claim 4 , wherein the conductor is made of a metal having a standard electrode potential E0 of about 0 V or more.

11 . The electronic component according to claim 5 , wherein the conductor is made of a metal having a standard electrode potential E0 of about 0 V or more.

12 . The electronic component according to claim 6 , wherein the conductor is made of a metal having a standard electrode potential E0 of about 0 V or more.

13 . The electronic component according to claim 7 , wherein the metal having a standard electrode potential E0 of about 0 V or more includes one or more selected from the group consisting of Cu, Ag, Pt, and Au.

14 . A method for manufacturing an electronic component, comprising:
preparing a body which is formed from a magnetic metal powder containing a metal having a standard electrode potential E0 of less than about 0 V and an insulator containing an insulating resin and which includes a conductor located in the insulator; preparing a mixed solution containing an ionizing component ionizing the metal contained in the magnetic metal powder, a surfactant, and a resin component; and applying the mixed solution to the body and drying the body.

15 . The method for manufacturing the electronic component according to claim 14 , wherein the metal having a standard electrode potential E0 of less than about 0 V includes at least one selected from the group consisting of Sn, Cr, Zn, Mn, Al, Mg, Ca, Ba, K, and Li in addition to Fe.

16 . The method for manufacturing the electronic component according to claim 14 , wherein the surfactant is an anionic surfactant containing a sulfo group.

17 . The method for manufacturing the electronic component according to claim 14 , wherein the insulator contains a first powder which is the magnetic metal powder and which contains Fe and a second powder containing at least one selected from the group consisting of Sn, Cr, Zn, Mn, Al, Mg, Ca, Ba, K, and Li.

18 . The method for manufacturing the electronic component according to claim 14 , wherein the magnetic metal powder contains a particle covered by a coating and the coating contains at least one selected from the group consisting of Sn, Cr, Zn, Mn, Al, Mg, Ca, Ba, K, and Li.

19 . The method for manufacturing the electronic component according to claim 14 , wherein the magnetic metal powder is a powder of an alloy or solid solution of Fe with at least one selected from the group consisting of Sn, Cr, Zn, Mn, Al, Mg, Ca, Ba, K, and Li.

20 . The method for manufacturing the electronic component according to claim 14 , wherein the conductor is made of a metal having a standard electrode potential E0 of about 0 V or more.

Assignees

• Murata Manufacturing Co

Inventors

• Inoue Mitsunori
• Kubota Hironobu

Classifications

• B22F1/102

  Metallic powder coated with organic material · CPC title

• B22F1/09

  Mixtures of metallic powders · CPC title

• H01F17/0013 Primary

  with stacked layers · CPC title

• B22F2007/045

  accompanied by fusion or impregnation · CPC title

• B22F7/04

  with one or more layers not made from powder, e.g. made from solid metal · CPC title