- 졸-겔법에 의한 Te 미립자분산 SiO2 겔의 특성
- ㆍ 저자명
- 문종수,조범래,강봉상,Mun. Shong-Soo,Jo. Bum-Rae,Kang. Bong-Sang
- ㆍ 간행물명
- 한국재료학회지
- ㆍ 권/호정보
- 2002년|12권 8호|pp.650-655 (6 pages)
- ㆍ 발행정보
- 한국재료학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
$SiO_2$ gels containing dispersed fine Te metal particles have been prepared by the sol- gel method using a starting solution containing Tetraethoxy Silane (Si($OC_2$ $H_{5}$ )$_4$), $H_2$O, Ethylalchol ($C_2$$H_{5}$OH), Nitric Acid ($HNO_3$) and Tellurium Tetracholoride ($TeCl_4$) in a several molar ratio. Gelling time of sols was about 3 days and viscosity of solution was very low about 2~3 cP for 3 days. Heat-treatments of the gel have been performed at 500, 700, 900, 1100 and $1300^{circ}C$ for 1 hour, respectively. We have investigated TG-DTA, X-ray diffraction patterns and SEM of heat-treatmented gels. The size of Te fine particles dispersed in $SiO_2$ gel was about 0.8~1 $mu extrm{m}$ and the shape was almost quadrangle.