온도에 따른 탄탈 분말 제조와 특성

윤재식; 박형호; 배인성; 이상백; 김병일; Jae Sik Yoon; Hyung Ho Park; In Sung Bae; Sang Baek Lee; Byung Il Kim

Korean Journal of Materials Research, Vol.11, No.12, 1052-1056, December, 2001

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온도에 따른 탄탈 분말 제조와 특성

Production of Tantalum Powder and Characteristics by Temperature

윤재식^†, 박형호, 배인성, 이상백¹, 김병일²

희유금속 소재 연구소
¹순천대학교 자동차 부품 및 소재 연구 개발센타
²순천대학교 재료금속공학과

Jae Sik Yoon^†, Hyung Ho Park, In Sung Bae, Sang Baek Lee¹, and Byung Il Kim²

Korea Research Insitute of Rare Metals, Korea
¹Research and Development Center for Automobile Parts and Materials, Korea
²Materials Science and Metallurgical Engineering, Sunchon National University, Korea

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Pure tantalum powder has been produced by sodium as a reluctant, K2TaF7 as a feed material and KCl/KF as a diluent in an inconel stainless steel bomb by the metallothermic reduction. The influence of experimental variable, such as temperature of reduction on the yield and characteristics of the Ta powder has been studied. As the temperature of the reduction was varied from 800?C 980?C, the yield of tantalum powder increased from 41% to 56%. However no appreciable improvement was observed above 920?C. The fraction of fine Ta Powder decreased appreciably with the increase of temperature, and particle size was 2 3μm at reduction temperature of 920?C.Therefore a reduction temperature of 920?C was optimally fixed for subsequent runs.

Keywords:tantalum powder;reduction temperature;yield

[References]

Yudkovski GL, Rastogi PK, Bala M, J. Met.(18) (1986)
CIBA Limitied, Belgium Patent 625, No. 22, 178
Kontantinov VI, Sklyarenko SI, Kholesbes EA, Poroskovaya Met. Acad. Nank SSRI(4), 47 (1961)
Jain SC, Bose DK, Gupta CK, Trans. Indian Inst. Met.(24), 1 (1971)
Wayne K, Waban H, Matin JP, U.S Patent 2, 927, 855 (1960) (1960)
Chang, U.S Patent 2, 927, 855 (1960) (1960)
Bose DK, Sehra JC, Jena PK, Trans. Indian Inst. Met.(23), 1 (1970)
Kelly JT, Ress GA, Canadian Pat., 657, 595 (1963)
Chang, U.S Patent 5, 234, 491 (1993) (1993)

[Referenced By]

[1] Yudkovski GL, Rastogi PK, Bala M, J. Met.(18) (1986)

[2] CIBA Limitied, Belgium Patent 625, No. 22, 178

[3] Kontantinov VI, Sklyarenko SI, Kholesbes EA, Poroskovaya Met. Acad. Nank SSRI(4), 47 (1961)

[4] Jain SC, Bose DK, Gupta CK, Trans. Indian Inst. Met.(24), 1 (1971)

[5] Wayne K, Waban H, Matin JP, U.S Patent 2, 927, 855 (1960) (1960)

[6] Chang, U.S Patent 2, 927, 855 (1960) (1960)

[7] Bose DK, Sehra JC, Jena PK, Trans. Indian Inst. Met.(23), 1 (1970)

[8] Kelly JT, Ress GA, Canadian Pat., 657, 595 (1963)

[9] Chang, U.S Patent 5, 234, 491 (1993) (1993)