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플라즈마 아크 방전법으로 제조된 Fe 나노분말의 미세조직에 미치는 챔버압력 영향

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)
  • 발행 : 2004.08.01

초록

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.

키워드

참고문헌

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피인용 문헌

  1. Characteristics and Sintering Behavior of Oxide Coated Iron Nanopowder Synthesized by Plasma Arc Discharge Process vol.46, pp.6, 2005, https://doi.org/10.2320/matertrans.46.1436