Method for producing a ceramic electronic component

Patent metadata

Field	Value
Publication number	US-11017950-B2
Application number	US-201615272680-A
Country	US
Kind code	B2
Filing date	Sep 22, 2016
Priority date	Oct 31, 2011
Publication date	May 25, 2021
Grant date	May 25, 2021

Abstract

A ceramic electronic component includes a ceramic body, an inner electrode, an outer electrode, and a connecting portion. The inner electrode is disposed inside the ceramic body. The end portion of the inner electrode extends to a surface of the ceramic body. The outer electrode is disposed on the surface of the ceramic body so as to cover the end portion of the inner electrode. The outer electrode includes a resin and a metal. The connecting portion is disposed so as to extend from an inside of the outer electrode to an inside of the ceramic body. In a portion of the surface of the ceramic body on which the outer electrode is disposed, the length of the connecting portion that extends in a direction in which the inner electrode is extends about 2.4 μm or more.

First claim

What is claimed is:

1. A method for producing a ceramic electronic component, the method comprising:
a step of preparing a ceramic body that includes an inner electrode disposed inside the ceramic body and in which an end portion of the inner electrode extends to a surface of the ceramic body;
a step of forming an electrode layer on the surface of the ceramic body so as to cover the end portion of the inner electrode, the electrode layer including a thermosetting resin, a first metal filler that contains a first metal component, and a second metal filler that contains a second metal component having a higher melting point than the first metal component; and
a step of heating the electrode layer to form, on the surface of the ceramic body, an outer electrode that includes the thermosetting resin and the first and second metal components and that is disposed so as to cover the end portion of the inner electrode and a connecting portion that contains the first metal component and a metal contained in the inner electrode and that is disposed so as to extend from an inside of the outer electrode to an inside of the ceramic body; wherein
the first metal component of the first metal filler has a melting point of about 550° C. or lower.

2. The method for producing a ceramic electronic component according to claim 1 , wherein, in the step of heating, the electrode layer is heated to about 480° C. or higher in a non-oxidative atmosphere.

3. The method for producing a ceramic electronic component according to claim 2 , wherein, in the step of heating, the electrode layer is heated to a temperature of lower than about 800° C.

4. The method for producing a ceramic electronic component according to claim 1 , wherein the first metal component contains Sn and the second metal component contains Ag.

5. The method for producing a ceramic electronic component according to claim 1 , wherein the inner electrode contains Ni.

Assignees

• Murata Manufacturing Co

Inventors

• Zenzai Kota
• Omori Hisayoshi
• Kanayama Takashi
• Sakurada Kiyoyasu
• Shimizu Naoki
• Katsuta Seiji
• Otani Shinji

Classifications

• H01G4/12 Primary

  Ceramic dielectrics {(H01G4/085 takes precedence)} · CPC title

• H01G4/30 Primary

  Stacked capacitors (H01G4/33 takes precedence) · CPC title

• H01G4/005

  Electrodes · CPC title

• H01F17/0013

  with stacked layers · CPC title

• Y10T29/49002

  Electrical device making · CPC title