| 摘要 |
PROBLEM TO BE SOLVED: To prevent crack and delamination occurrence at the time of burning by adding a base metal with specified average particle size and oxygen content as a main component to a conductive paste and oxidizing the surface of the base metal. SOLUTION: A conductive paste is produced by adding a base metal with 0.1-0.8μm average particle size and 0.5-5.0wt.% of oxygen content as a main component. Ni is preferable as the base metal since the sintering temperature is the same as that of a common dielectric material. In order to add oxygen to the base metal, the base metal is brought into contact with oxygen gas at high temperature. A particle 2 of the base metal exists as aggregated state of a plurality of crystallites in the paste or as single state of respective crystallites. In the case Ni particles are used as the base metal, an inside part 3 comprises Ni and a surface part 4 comprises NiO. The conductive paste contains a base metal as a main component and may further contain a prescribed amount of raw material powders as same as these of a ceramic green sheet as coexisting materials.
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