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http://dx.doi.org/10.4150/KPMI.2004.11.4.328

Effect of Chamber Pressure on the Microstructure of Fe Nano Powders Synthesized by Plasma Arc Discharge Process  

박우영 (경남대학교 재료공학과, 한국기계연구원 재료기술연구부)
윤철수 (한국기계연구원 재료기술연구)
김성덕 (한국기계연구원 재료기술연구)
유지훈 (한국기계연구원 재료기술연구)
오영우 (경남대학교 재료공학)
최철진 (한국기계연구원 재료기술연구부)
Publication Information
Journal of Powder Materials / v.11, no.4, 2004 , pp. 328-332 More about this Journal
Abstract
Fe nanopowders were successfully synthesized by plasma arc discharge (PAD) process using Fe rod. The influence of chamber pressure on the microstructure was investigated by means of X-ray Diffraction (XRD), Field Emission Scanning Electron Microscope (FE-SEM), Transmission Electron Microscopy (TEM) and X-ray Photoelectron Spectroscopy (XPS). The prepared particles had nearly spherical shapes and consisted of metallic cores (a-Fe) and oxide shells (Fe$_{3}$O$_{4}$), The powder size increased with increasing chamber pressure due to the higher dissolution and ejection rate of H$_2$ and gas density in the molten metal.
Keywords
Fe nanopowder; Plasma arc discharge; Core/shell structures;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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