材料科学
热电效应
微观结构
退火(玻璃)
塞贝克系数
热电材料
等温过程
差示扫描量热法
扫描电子显微镜
大气温度范围
电阻率和电导率
分析化学(期刊)
热重分析
冶金
热导率
复合材料
热力学
化学工程
化学
电气工程
物理
色谱法
工程类
作者
Jung Il Lee,Jong Bum Park,Sin-Wook You,Joo Ho Lee,Il Ho Kim,Kyung-Wook Jang,Soon‐Chul Ur
出处
期刊:Solid State Phenomena
日期:2006-12-01
卷期号:118: 561-564
被引量:1
标识
DOI:10.4028/www.scientific.net/ssp.118.561
摘要
Clathrate Ba8Al16Si30 was produced by arc melting and annealing effects on the microstructure and thermoelectric properties were investigated. The phase transformation behavior of arc-melted Ba8Al16Si30 was examined by thermogravimetric analysis, differential scanning calorimetry, hardness test, X-ray diffraction and scanning electron microscope analyses. Isothermal annealing was carried out to induce the transformation to a thermoelectric phase at 500°C to 700°C for 5 hrs. Thermoelectric properties in the temperature range between 300K and 600K were measured and evaluated. Electrical conductivity was decreased and Seebeck coefficient was increased with increasing isothermal annealing temperature. The arc-melted and the isothermal annealed specimens represented n-type conduction at temperatures examined, and they showed reliable thermoelectric behaviors.
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