2019-Sustainable Industrial Processing Summit
SIPS2019 Volume 11: New and Advanced Materials, Technologies, and Manufacturing
| Editors: | F. Kongoli, F. Marquis, N. Chikhradze, T. Prikhna |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2019 |
| Pages: | 174 pages |
| ISBN: | 978-1-989820-10-0 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Sustainable Synthesis of Bristle-Glass-Shaped Copper Particles and Successive Silver Plating Process
Jong-Hyun Lee1; Eun Byeol Choi1;1SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY, Seoul, South Korea;
Type of Paper: Regular
Id Paper: 101
Topic: 43
Abstract:
Metal dendrite powders have received much attention owing to their unique physical and chemical properties. These particles have attractive nanostructures with large surface areas similar to nano-sized materials, despite being in the form of micro-sized particles that are easy to handle. In particular, Cu particles have been widely studied and used in many applications because of their conductive, catalytic, and optical properties. Moreover, Ag-coated Cu particles can be considered as an alternative for Ag particles because they provide equivalent conductivity at a lower cost [1a��4].
Bristle-glass-shaped Cu particles were fabricated via a fast galvanic displacement reaction for 3a��5 min under ambient conditions by adding metal particles into an aqueous electrolyte without chloride ions. The obtained Cu particles have a small average size of 4.44 I�m and short, multiple branches were aggregates of nanoparticles formed on stem-like backbones. The synthesized Cu dendrites could be protected against oxidation during drying via post-treatment using chelating or complexing agents. This novel technique to prepare the modified dendrites is extremely simple and suitable for mass production.
To obtain Ag-coated Cu particles, the synthesized Cu particles were successively coated with Ag via another galvanic displacement reaction by adding Ag plating solution into the Cu particle solution. The Ag coating was homogeneously performed with the selection of optimal Ag complex solution. The Ag-coated Cu particles induced the delay of oxidation initiation temperature from 150 to 178 oC during the dynamic heating to 500 oC in air. The metallic particles can be used as an anti-oxidation filler for conductive, electro-magnetic interference shielding, and metallic bonding materials.
Keywords:
Coatings; Corrosion; HighTemperature; Principles; Surface;References:
[1] Y. Kobayashi, T. Shirochi, Y. Yasuda, T. Morita, Solid State Sci. 13 (2011) 553.[2] T. Ishizaki and R. Watanabe, J. Mater. Chem. 22 (2012) 25198.
[3] T. Yamakawa, T. Takemoto, M. Shimoda, H. Nishikawa, K. Shiokawa, N. Terada, J. Electron. Mater. 42 (2013) 1260.
[4] X. Liu and H. Nishikawa, Scr. Mater. 120 (2016) 80.