期刊
MATERIALS RESEARCH BULLETIN
卷 46, 期 12, 页码 2408-2417出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2011.08.047
关键词
Magnetic materials; Nanostructures; Plasma deposition; Electron microscopy; Raman spectroscopy
资金
- Ministry of Science and Education through the Department of Chemistry, Warsaw University [N204 248140]
Carbon-encapsulated iron nanoparticles were continuously and selectively synthesised in a thermal plasma jet from ethanol (carbon source) and Fe powders with different grain sizes. The grain size of the Fe powder influenced the size distribution of the as-produced carbon encapsulates. The products obtained from large Fe particles (50-78 mu m) were comprised of small encapsulates with diameters between 5 and 10 nm. Larger carbon encapsulates with a broad diameter distribution (10-100 nm) were synthesised from the finest Fe particles (18 mu m). It was also found that Fe particle size was the most crucial parameter for determining the encapsulation yield. The encapsulation yield was also influenced by the carbon to iron ratio and the thermal conductivity of the plasma gas. (C) 2011 Elsevier Ltd. All rights reserved.
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