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http://dx.doi.org/10.6117/kmeps.2016.23.4.125

Synthesis of Cu Nanoparticles through a High-Speed Chemical Reaction between Cuprous Oxide and Sulfuric Acid and Enhancement of Dispersion by 3-Roll Milling  

Chee, Sang-Joo (Department of Materials Science & Engineering, Seoul National University of Science and Technology)
Lee, Jong-Hyun (Department of Materials Science & Engineering, Seoul National University of Science and Technology)
Hyun, Chang-Yong (Department of Materials Science & Engineering, Seoul National University of Science and Technology)
Publication Information
Journal of the Microelectronics and Packaging Society / v.23, no.4, 2016 , pp. 125-133 More about this Journal
Abstract
With the aim of using a filler material in a conductive paste, fine Cu nanoparticles were synthesized through the high-speed chemical reaction between cuprous oxide ($Cu_2O$) powder and sulfuric acid in distilled water. Under external temperature of $7^{\circ}C$, sulfuric acid concentration of 48%, and $Cu_2O$ amount of 30 g, the $Cu_2O$ particles were eliminated and slightly aggregated Cu nanoparticles were synthesized. Futhermore, Cu nanoparticles of 224 nm, in which the aggregation between particles was obviousiy much suppressed, were synthesized with the choice of an additive. In the particle sample, occasionally there are coarse particles formed by the aggregation of fine nanoparticles and weak linkages between the nanoparticles. However, the coarse particles were destroyed and the linkages were broken after mixing with a resin formulation, indicating the behavior of untangling the aggregation between nanoparticles.
Keywords
Cu nanoparticle; filler; high-speed synthesis; aggregation; 3-roll milling;
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Times Cited By KSCI : 7  (Citation Analysis)
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