- 수산 탄탈륨 용액을 이용한 초미립 TaC 분말의 합성
- ㆍ 저자명
- 권대환,홍성현,김병기,Kwon. Dae-Hwan,Hong. Seong-Hyeon,Kim. Byoung-Kee
- ㆍ 간행물명
- 한국재료학회지
- ㆍ 권/호정보
- 2003년|13권 12호|pp.806-811 (6 pages)
- ㆍ 발행정보
- 한국재료학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
Ultrafine TaC powders were synthesised by spray drying using tantalum oxalate solution. The spray dried powders were spherical shape and less than 30 $mu extrm{m}$ 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.