Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Synthesis of Ultrafine TaC Powders Using Tantalum Oxalate Solution

수산 탄탈륨 용액을 이용한 초미립 TaC 분말의 합성

  • Kwon, Dae-Hwan (Materials Technology Dept, Korea Institute of Machinery & Materials) ;
  • Hong, Seong-Hyeon (Materials Technology Dept, Korea Institute of Machinery & Materials) ;
  • Kim, Byoung-Kee (Materials Technology Dept, Korea Institute of Machinery & Materials)
  • 권대환 (한국기계연구원 나노분말재료그룹) ;
  • 홍성현 (한국기계연구원 나노분말재료그룹) ;
  • 김병기 (한국기계연구원 나노분말재료그룹)
  • Published : 2003.12.01
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Abstract

Ultrafine TaC powders were synthesised by spray drying using tantalum oxalate solution. The spray dried powders were spherical shape and less than 30 $\mu\textrm{m}$ in size. The powders calcined at 500 and X$700^{\circ}C$ showed amorphous structures and $Ta_2$$O_{5}$ phase was obtained by calcining at $700^{\circ}C$. 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 $1050^{\circ}C$ for 6 hrs. The observed size of TaC powders by TEM was less than 200 nm.

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References

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