Preparation of urchin-like carbon fibers/AlSi12 and their growth mechanism investigation
| Autor: | Lifeng Dong, Qingqing Zhang, Hongzhou Dong, Qian Zhang, Xiangfang Wu, Jianhua Yu |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Argon Hydrogen chemistry.chemical_element Hydrochloric acid 02 engineering and technology Chemical vapor deposition 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Copper 0104 chemical sciences Catalysis chemistry.chemical_compound Acetylene chemistry Chemical engineering General Materials Science Single displacement reaction 0210 nano-technology |
| Zdroj: | Materials Chemistry and Physics. 227:313-317 |
| ISSN: | 0254-0584 |
| Popis: | In this paper, urchin-like carbon fibers/AlSi12 (CFs/AlSi12) are synthesized by in-situ growth of one-dimensional carbon fibers on the surface of AlSi12 microspheres. Copper metal catalyst for the growth of carbon fibers is inlaid within microcracks and micropores on the surface of AlSi12 microspheres, which are produced by corrosion via hydrochloric acid and subsequent displacement reaction between aluminum and copper dichloride. For subsequent chemical vapor deposition (CVD), argon/hydrogen gas and acetylene are used as pretreatment gas and carbon source, respectively. Lots of carbon fibers are formed on the surface of AlSi12 microspheres, and urchin-like CFs/AlSi12 are obtained finally. In addition, the growth mechanism of urchin-like CFs/AlSi12 is discussed briefly. |
| Databáze: | OpenAIRE |
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