도전체 매개반응(EMR)법에 의한 Ti 분말 제조

박일; 추용호; 이철로; 이오연; Il Park; Yong Ho Chu; Chul Ro Lee; Oh Yeon Lee

Korean Journal of Materials Research, Vol.14, No.12, 857-862, December, 2004

DOI10.3740/MRSK.2004.14.12.857 Export Citation

도전체 매개반응(EMR)법에 의한 Ti 분말 제조

Production of Titanium Powder by Electronically Mediated Reaction (EMR)

박일, 추용호^{1, †}, 이철로 , 이오연

전북대학교 공과대학 신소재공학부
¹전북대학교 신소재개발연구센터

Il Park, Yong Ho Chu^{1, †}, Chul Ro Lee , and Oh Yeon Lee

School of Advanced Materials Engineering, Chonbuk National University, 664-14, 1-ga, Dukjin-dong, Chonju, Korea 561-756
¹Research Center of Advanced Materials Development, Chonbuk National University, Korea

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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 ? 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 99.5mass% purity was successfully obtained.

Keywords:titanium powder;calciothermic reduction;electronically mediated reaction

[References]

Kroll W, Tr. Electrochem. Soc., 78, 35 (1940)
Chen Z, Fray DJ, Farthing TW, Nature, 407, 361 (2000)
Ono K, Suzuki RO, J. of Metals, 54, 59 (2002)
Okabe TH, Sadoway DR, J. Mat. Res., 13, 3372 (1998)
Uda T, Okabe TH, Waseda Y, J. Japan Inst. Metals, 62, 796 (1998)
Okabe TH, Uda T, Waseda Y, Shigen-to-SoZai, 114, 573 (1998)
Okabe TH, Park I, Jacob KT, Waseda Y, J. Alloys and Compounds, 288, 200 (1999)
Park I, Okabe TH, Waseda Y, Yu HS, Lee OY, J. Mater. Trans., 42(5), 850 (2001)
Wartman FS, Baker DH, Nettle JR, Homme VE, J. Electrochem. Soc., 101, 507 (1954)
Okabe TH, Waseda Y, J. Metals, 49, 28 (1997)
Park I, Okabe TH, Waseda Y, J. Alloys and Compounds, 280, 265 (1998)
Park I, Okabe TH, Lee OY, Lee CR, Waseda Y, J. Mater. Trans., 43(8), 2080 (2002)

[Related Articles]

[1] Kroll W, Tr. Electrochem. Soc., 78, 35 (1940)

[2] Chen Z, Fray DJ, Farthing TW, Nature, 407, 361 (2000)

[3] Ono K, Suzuki RO, J. of Metals, 54, 59 (2002)

[4] Okabe TH, Sadoway DR, J. Mat. Res., 13, 3372 (1998)

[5] Uda T, Okabe TH, Waseda Y, J. Japan Inst. Metals, 62, 796 (1998)

[6] Okabe TH, Uda T, Waseda Y, Shigen-to-SoZai, 114, 573 (1998)

[7] Okabe TH, Park I, Jacob KT, Waseda Y, J. Alloys and Compounds, 288, 200 (1999)

[8] Park I, Okabe TH, Waseda Y, Yu HS, Lee OY, J. Mater. Trans., 42(5), 850 (2001)

[9] Wartman FS, Baker DH, Nettle JR, Homme VE, J. Electrochem. Soc., 101, 507 (1954)

[10] Okabe TH, Waseda Y, J. Metals, 49, 28 (1997)

[11] Park I, Okabe TH, Waseda Y, J. Alloys and Compounds, 280, 265 (1998)

[12] Park I, Okabe TH, Lee OY, Lee CR, Waseda Y, J. Mater. Trans., 43(8), 2080 (2002)