대한금속재료학회지 (Korean Journal of Metals and Materials)

  • 제50권11호
  • /
  • Pages.823-828
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  • 2012
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  • 1738-8228(pISSN)
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  • 2288-8241(eISSN)
대한금속재료학회 (The Korean Institute of Metals and Materials)
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칼슘 열환원법에 의한 Ta2O5로부터 Ta분말제조

Tantalum Powder Preparation from Ta2O5 by Calciothermic Reduction

  • 하정우 (경북대학교 금속신소재공학과) ;
  • 손호상 (경북대학교 금속신소재공학과) ;
  • 정재영 (포항산업과학연구원)
  • Ha, Jung-Woo (Department of Materials Science and Metallurgical Engineering, Kyungpook National University) ;
  • Sohn, Ho-Sang (Department of Materials Science and Metallurgical Engineering, Kyungpook National University) ;
  • Jung, Jae-Young (Research Institute of Industrial Science & Technology(RIST))
  • 투고 : 2012.04.02
  • 발행 : 2012.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

Direct reduction of $Ta_2O_5$ using liquid calcium was investigated. The experiment was conducted in a closed stainless steel chamber in an Ar atmosphere for 5-120 minutes. Most of $Ta_2O_5$ was reduced to ${\alpha}-Ta$ in 30 minutes above 1173 K and at a molar ratio of Ca and $Ta_2O_5$ above 10. The particles size increased with the reaction temperature, but it did not change much above 1223 K. The oxygen content of metal Ta was about 1 wt%.

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참고문헌

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