Silver fine particle production method and silver fine particles
AssigneeNisshin Engineering Inc.
InventorsShu Watanabe, Shiori Sueyasu, Keitaroh Nakamura
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Abstract
Provided are: a production method for silver fine particles that retain capabilities such as conductivity and make it possible to form wiring at even lower temperatures; and silver fine particles. A silver fine particle production method in which silver powder is used to produce silver fine particles by means of a gas phase method. The silver fine particle production method has a step for supplying an organic acid to the silver fine particles. The gas phase method is, for example, a plasma method or a flame method. The silver fine particles have a surface coating that includes at least a carboxyl group.
Claims3
A silver fine particle production method for producing silver fine particles using silver powder by means of a thermal plasma process, the method comprising:
- supplying the silver powder into a thermal plasma flame and supplying cooling gas to a tail portion of the thermal plasma flame to thereby produce primary fine particles of silver;
- and
- supplying an organic acid to the primary fine particles of silver,
- wherein said supplying an organic acid to the primary fine particles of silver comprises spraying an aqueous solution containing the organic acid to an atmosphere in which the organic acid is thermally decomposed, to thereby coat the primary fine particles of silver with an organic substance generated by thermal decomposition of the organic acid.
Dependencies are inferred from the claim text.