Process and Properties of Ultrafine Silver-Coated Electrolytic Copper Powders
| Autor: | De Rong Meng, Li Min Wang, Jing Guo Zhang, Li Gen Wang, Qiang Hu, Chen Fei Li |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Scanning electron microscope Reducing agent Mechanical Engineering Metallurgy Energy-dispersive X-ray spectroscopy chemistry.chemical_element 02 engineering and technology Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Copper 0104 chemical sciences chemistry Chemical engineering Mechanics of Materials Electrical resistivity and conductivity General Materials Science Single displacement reaction 0210 nano-technology Bimetallic strip |
| Zdroj: | Materials Science Forum. 898:898-907 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.898.898 |
| Popis: | The ultrafine electrolytic copper powders were coated by silver using a combination of displacement reaction and reduction method, and the bimetallic core-shell powders with a 10wt.% addition of silver were obtained. The effects of concentration of complexing-dispersing agent and reducing agent on the silver coating layer were studied. The morphology, composition and structure of bimetallic core-shell powders were characterized by scanning electron microscopy, X-ray diffraction and energy dispersive spectroscopy. The oxidation resistance and electric conductivity of the coated powders were also investigated. The experimental results showed that the powders have a better oxidation resistance and higher conductivity using the complexing-dispersing agent of 10g/L EDTA-2Na and the reducing agent n of 30 g/L formaldehyde. |
| Databáze: | OpenAIRE |
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