Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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Morphology of the Inclusion as the Al Deoxidation Product of Molten Iron

용융철에서 알루미늄 탈산 생성 개재물의 형상

  • Lee, Bong-Ok (Technical Research Center, ASIA MOTORS) ;
  • Lee, Kyung-Ku (Dept. of Iron & Metallurgical Engineering, Hanlyo University)
  • 이봉옥 (아시아 자동차 기술연구소) ;
  • 이경구 (한려대학교 제철금속학과)
  • Published : 1999.12.20
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Abstract

To investigate inclusions(oxides) which cause some trouble in the quality of the metal and a steel-making process, samples were manufactured. The molten irons were deoxidized using Al deoxidizer, and the morphology of the deoxidation products and the process of deoxidation were investigated by optical microscope, scanning electron microscope (SEM) and energy dispersive X-ray spectrometer(EDS). The reactions between Fe melt and Al deoxidizer formed deoxidation product, and those reaction may accelerates the reduction of oxide in Fe melt. According to the results of SEM analysis after deoxidizing treatment, it was found that deoxidation products had spherical cluster shape when 1% Al was added and dendritic shape with $2{\sim}3%$ A1 addition. The deoxidation products were globular, dendritic, polygonal(square) and cluster shape.

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