Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Production of Titanium Powder by Electronically Mediated Reaction (EMR)

도전체 매개반응(EMR)법에 의한 Ti 분말 제조

  • Park Il (School of Advanced Materials Engineering, College of Engineering, Chonbuk National University) ;
  • Chu Yong Ho (Research Center of Advanced Materials Development, Chonbuk National University) ;
  • Lee Chul Ro (School of Advanced Materials Engineering, College of Engineering, Chonbuk National University) ;
  • Lee Oh Yeon (School of Advanced Materials Engineering, College of Engineering, Chonbuk National University)
  • 박일 (전북대학교 공과대학 신소재공학부) ;
  • 추용호 (전북대학교 신소재개발연구센터) ;
  • 이철로 (전북대학교 공과대학 신소재공학부) ;
  • 이오연 (전북대학교 공과대학 신소재공학부)
  • Published : 2004.12.01
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Abstract

Production of titanium powder directly from tantalum oxides ($TiO_2$) pellet through an electronically mediated reaction (EMR) by calciothermic reduction has been investigated. Feed material ($TiO_2\;pellet$) and reductant (Ca-Ni alloy) were charged into electronically isolated locations in a molten calcium chloride ($CaCl_2$) bath at $950^{\circ}C$. The current flow through an external circuit between the feed (cathode) and reductant (anode) locations was monitored during the reduction of $TiO_2$. The current approximately 3.2A was measured during the reaction in the external circuit connecting cathode and anode location. After the reduction experiment, pure titanium powder with low nickel content was obtained even though Ca-Ni alloy was used as a reductant. These results demonstrate that titanium powder can be produced without direct physical contact between the feed and reductant. In certain experimental conditions, pure titanium powder with approximately $99.5\;mass\%$ purity was successfully obtained.

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References

  1. W. Kroll, Tr. Electrochem. Soc., 78, 35 (1940) https://doi.org/10.1149/1.3071290
  2. Z. Chen, D. J. Fray and T. W. Farthing, Nature, 407, 361 (2000) https://doi.org/10.1038/35030069
  3. K. Ono and R.O. Suzuki, J. of Metals, 54, 59 (2002)
  4. T. H. Okabe and D.R. Sadoway: J. Mat. Res., 13, 3372 (1998) https://doi.org/10.1557/JMR.1998.0459
  5. T. Uda, T. H. Okabe and Y. Waseda: J. Japan Inst. Metals, 62, 796 (1998)
  6. T. H. Okabe, T. Uda and Y. Waseda: Shigen-to-SoZai (J. Min. Mater. Process. Inst. Jpn.) 114, 573 (1998)
  7. T. H. Okabe, I. Park, K. T. Jacob and Yoshio Waseda., J. Alloys and Compounds, 288, 200 (1999) https://doi.org/10.1016/S0925-8388(99)00130-9
  8. I. Park, T. H. Okabe, Y. Waseda, H. S. Yu and O. Y. Lee, J. Mater. Trans., 42(5), 850 (2001) https://doi.org/10.2320/matertrans.42.850
  9. F. S. Wartman, D. H. Baker, J. R. Nettle and V. E. Homme, J. Electrochem. Soc., 101, 507 (1954) https://doi.org/10.1149/1.2781146
  10. T. H. Okabe and Y. Waseda, J. Metals (JOM), 49, 28 (1997)
  11. I. Park, T. H. Okabe and Y. Waseda, J. Alloys and Compounds, 280, 265 (1998) https://doi.org/10.1016/S0925-8388(98)00668-9
  12. I. Park, T. H. Okabe, O. Y. Lee, C. R. Lee and Y. Waseda, J. Mater. Trans., 43(8), 2080 (2002) https://doi.org/10.2320/matertrans.43.2080