도전체 매개반응(EMR)법에 의한 미세 Ta 분말 제조

박일; 이철로; 이오연; Il Park; Chuel Ro Lee; Oh Yeon Lee

Korean Journal of Materials Research, Vol.14, No.10, 719-724, October, 2004

DOI10.3740/MRSK.2004.14.10.719 Export Citation

도전체 매개반응(EMR)법에 의한 미세 Ta 분말 제조

Production of Fine Tantalum Powder by Electronically Mediated Reaction (EMR)

박일^†, 이철로 , 이오연

전북대학교 신소재개발연구센터, 전북대학교 공과대학 신소재공학부

Il Park^†, Chuel Ro Lee , and Oh Yeon Lee

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

E-mail:

Production of fine tantalum powder by calciothermic reduction of tantalum oxides ( Ta 2 O 5 ) pellet through an electronically mediated reaction (EMR) has been investigated. Ta 2 O 5 pellet feed and reductant calcium-nickel (Ca-Ni) alloy were charged into electronically isolated locations in a molten CaCl 2 bath. The current flow through an external path between the feed (cathode) and reductant (anode) locations was monitored. The current approximately 4.7A was measured during the reaction in the external circuit connecting cathode and anode location. Tantalum powder with approximately 99 mass% purity was readily obtained after each experiment. Tantalum powder by EMR using Ta 2 O 5 pellet feed was fine compared with that of metal powder by metallothermic reduction and EMR using Ta 2 O 5 powder feed.

Keywords:tantalum powder;fine particles;calciothermic reduction;electronically mediated reaction

[References]

Gupta CK, Int. Met. Rev., 29(6), 405 (1984)
Gupta CK, Jena PK, J. Less-Common Metals, 8, 90 (1965)
Hunter MA, J. Metals, 5, 130 (1953)
Sehra JC, Bose DK, Jena PK, Trans. Ind. Inst. Metals. Mar. (1968)
Hamilton CB, Wilhelm HA, Proc. Iowa. Acad. Sci., 68, 189 (1961)
CIBA Limited, Belgium Patent, 625,178 May 22, (1963) (1963)
Juchi Toshiaki and Ono Kenji-Seie Repts Res-Instt. Togoko Uni. Ser., A13, 456 (1961) (1961)
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 (J. Min. Mater. Process. Inst. Jpn.) 114, 573 (1998) (1998)
Park I, Okabe TH, Waseda Y, J. Alloy. Compd., 280, 265 (1998)
Okabe TH, Park I, Jacob KT, Waseda Y, J. Alloy. Compd., 288, 200 (1999)
Park I, Okabe TH, Waseda Y, Yu HS, Lee OY, J. Mater. Trans., 42(5), 850 (2001)
Park I, Okabe TH, Lee OY, Lee CR, Waseda Y, J. Mater. Trans., 43(8), 2080 (2002)
Wartman FS, Baker DH, Nettle JR, Homme VE, J. Electrochem. Soc., 101, 507 (1954)
Okabe TH, Waseda Y, J. Metals, 49, 28 (1997)

[Related Articles]

[1] Gupta CK, Int. Met. Rev., 29(6), 405 (1984)

[2] Gupta CK, Jena PK, J. Less-Common Metals, 8, 90 (1965)

[3] Hunter MA, J. Metals, 5, 130 (1953)

[4] Sehra JC, Bose DK, Jena PK, Trans. Ind. Inst. Metals. Mar. (1968)

[5] Hamilton CB, Wilhelm HA, Proc. Iowa. Acad. Sci., 68, 189 (1961)

[6] CIBA Limited, Belgium Patent, 625,178 May 22, (1963) (1963)

[7] Juchi Toshiaki and Ono Kenji-Seie Repts Res-Instt. Togoko Uni. Ser., A13, 456 (1961) (1961)

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

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

[10] Okabe TH, Uda T, Waseda Y: Shigen-to-SoZai (J. Min. Mater. Process. Inst. Jpn.) 114, 573 (1998) (1998)

[11] Park I, Okabe TH, Waseda Y, J. Alloy. Compd., 280, 265 (1998)

[12] Okabe TH, Park I, Jacob KT, Waseda Y, J. Alloy. Compd., 288, 200 (1999)

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

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

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

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