- 급속응고기술에 의한 p-type 25% $Bi_{2}Te_{3}+75% Sb_{2}Te_{3}$ 열간압축제의 열전특성
- ㆍ 저자명
- 김익수
- ㆍ 간행물명
- 한국분말야금학회지
- ㆍ 권/호정보
- 1996년|3권 4호|pp.246-252 (7 pages)
- ㆍ 발행정보
- 한국분말야금학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
$Bi_{2}Te_{3}-Sb_{2}Te_{3}$, $Bi_{2}Te_{3}-Bi_{2}Se_{3}$ solid solutions are of great interest as materials for thermoelectric energy conversion. One of the key technologies to ensure the efficiency of thermoelectric device is to obtain chemically homogeneous solid solutions. In this work, the new process with rapid solidification followed by hot pressing was investigated to produce homogeneous thermoelectric materials. Characteristics of the materials were examined with XRD, SEM, EPMA-line scan and bending test. Property variations of the materials were investigated as a function of variables, such as excess Te quantity and hot pressing temperature. Quenched ribbons are very brittle and consisted of homogeneous $Bi_{2}Te_{3}$, $Sb_{2}Te_{3}$ solid solutions. When the process parameters were optimized, the maximum figure of merit was 3.073$ imes$$10^{-3}K^{-4}$. The bending strength of the material, hot pressed at 45$0^{circ}C$, was 5.87 kgf/${mm}^2$.