Method of manufacturing fine metal particles, substance containing fine metal particles, and paste solder composition
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United States of America Patent
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Issued Date -
Mar 13, 2003
app pub date -
Mar 26, 2002
filing date -
Mar 28, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
There is provided an in-oil atomization method wherein a solder is fused and dispersed in a heated particle dispersion medium, the method being featured in that even if the quantity of the particle dispersion medium to be employed is relatively small, fine solder particles can be effectively obtained. Namely, this invention provides a method of manufacturing fine particles, wherein solder is fused in the heated particle dispersion medium to obtain a molten solder, which is then dispersed by means of an agitator to obtain molten solder particles which are subsequently cooled and solidify, the method being characterized in that the above dispersing step is performed in the presence of a particle coalescence-preventing agent. This invention also provides a fine metal particles-containing substance and a paste solder composition.
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