Method for producing a ceramic electronic component
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.
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.