Preparation and electrical properties of sintered copper powder compacts modified by polydopamine-derived carbon nanofilms
| Autor: | Zhengfeng Jia, Yao Zhao, Limin Zhao, Jinming Zhen, Xin Shao, Haoqi Li, Dmitriy A. Dikin, Bo Ge, Junjie Ni, Fei Ren |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Mechanical Engineering Composite number Sintering chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Copper 0104 chemical sciences Grain growth symbols.namesake Chemical engineering X-ray photoelectron spectroscopy chemistry Mechanics of Materials Transmission electron microscopy symbols General Materials Science Nanometre 0210 nano-technology Raman spectroscopy |
| Zdroj: | Journal of Materials Science. 53:6562-6573 |
| ISSN: | 1573-4803 0022-2461 |
| DOI: | 10.1007/s10853-018-2000-6 |
| Popis: | In this study, copper (Cu)/polydopamine (PDA) composite was fabricated by vacuum hot-press sintering of micrometer-sized Cu particles covered with PDA film tailored at the nanometer scale thickness. The resultant compacts exhibited much higher electrical conductivity than the uncoated counterparts. Analyses of sintered samples using scanning and transmission electron microscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy revealed the conversion of PDA into carbonized PDA (cPDA). The increased mass density and grain growth are likely responsible for improved electrical conductivity of the composite material. |
| Databáze: | OpenAIRE |
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