수산 탄탈륨 용액을 이용한 초미립 TaC 분말의 합성

권대환; 홍성현; 김병기; Dae-Hwan Kwon; Seong-Hyeon Hong; Byoung-Kee Kim

Korean Journal of Materials Research, Vol.13, No.12, 806-811, December, 2003

DOI10.3740/MRSK.2003.13.12.806 Export Citation

수산 탄탈륨 용액을 이용한 초미립 TaC 분말의 합성

Synthesis of Ultrafine TaC Powders Using Tantalum Oxalate Solution

권대환^†, 홍성현, 김병기

한국기계연구원 나노분말재료그룹

Dae-Hwan Kwon^†, Seong-Hyeon Hong, and Byoung-Kee Kim

Materials Technology Dept, Korea Institute of Machinery and Materials, Changwon, Gyuong-nam, 641-010, Korea

E-mail:

Ultrafine TaC powders were synthesised by spray drying using tantalum oxalate solution. The spray dried powders were spherical shape and less than 30 μm in size. The powders calcined at 500 and X 700 ? C showed amorphous structures and Ta 2 O 5 phase was obtained by calcining at 700 ? C . The particle size and shape remains constant after calcination. The calcined spherical powders were composed of an agglomerate of primary particles under 50 nm in size. The complete formation of TaC could be achieved by heat treatment at 1050 ? C for 6 hrs. The observed size of TaC powders by TEM was less than 200 nm.

Keywords:Tantalum carbide;Tantalum oxalate;Ultrafine;Spray drying

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[1] Choo HS, Park JG, Kwon HW, Powder Metallurgy, p.217, Won Chang publishing Co. (1993) (1993)

[2] Baek SY, Cutting Tools, p.29, Dae Kwang Publishing Co. (1979) (1979)

[3] Upadhyaya GS, Mater. Des., 22, 483 (2001)

[4] Choo HS, Park JG, Kwon HW, Powder Metallurgy, p.137, Won Chang publishing Co. (1993) (1993)

[5] Schaschel E, Metal Powder Report, 46(2), 30 (1991)

[6] Suzuki H, Basis & Application of Hardmetals & Sintered Hard Materials, p.14, Hwan Sun Co.(1986) (1986)

[7] Storms EK, The refractory carbides, p.82, Academic Press Inc, New York, (1967) (1967)

[8] Schwarzkopf P, Kieffer R, Leszynski W, Benesovsky F, Cemented Carbides, p.29, The Macmillan Company, New York (1960) (1960)

[9] Hiromichi I, Tsukasa S, JP Patent 2000-044222, (2000) (2000)

[10] Crayton PH, Gridly MC, Powder Met., 14, 78 (1971)

[11] Souza CP, Favotto F, Satre P, L'Honore A, Roubin M, Brazilian Journal of Chemical Eegineering, 16(1), 1 (1999)

[12] Swalin RA, Thermodynamics of Solids, p.219, Wiley, (1961) (1961)

[13] Cho HJ, Lee JH, Park SJ, J. of The Korean Ceramic Society, 28(11), 851 (1991)

[14] Cullity BD, Elements of X-ray Diffraction, p.163, Addison-Wesley Publishing Co. (1978) (1978)