- 급속응고기술에 의한 n-type 90%$Bi_{2}Te_{3}+10% Bi_{2}Se_{3}$ 열간압축제의 열전특성
- ㆍ 저자명
- 김익수
- ㆍ 간행물명
- 한국분말야금학회지
- ㆍ 권/호정보
- 1996년|3권 4호|pp.253-259 (7 pages)
- ㆍ 발행정보
- 한국분말야금학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
The efficiency of thermoelectric devices for different applications is known to depend on the thermoelectric effectiveness of the material which tends to grow with the increase of its chemical homogeneity. Thus an important goal for thermal devices is to obtain chemically homogeneous solid solutions. In this work, the new process with rapid solidification (melt spinning method) followed by hot pressing was investigated to produce homogeneous material. Characteristics of the material were examined with HRD, SEM, EPMA-line scan and bending test. Property variations of the materials were investigated as a function of variables, such as dopant ${CdCl}_{2}$ quantity and hot pressing temperature. Quenched ribbons are very brittle and consist of homogeneous $Bi_2Te_3$, ${Bi}_{2}{Se}_{3}$ solid solutions. When the process parameters were optimized, the maximum figure of merit was 2.038$ imes$$10^{-3}K^{-4}. The bending strength of the material hot pressed at 50$0^{circ}C$ was 8.2 kgf/${mm}^2$.