摘要
研究了由快速凝固粉烧结制备的ｐ型 Ｆｅ０．９２５Ｍｎ０．０７５Ｓｉ２－０．１７％（质量分数）Ｃｕ样品的热电性能随温度的变化。Ｘ射线衍射分析表明，快速凝固粉由α相和ε相组成。烧结样品８００℃退火 ２１ｈ后，完全转变为β半导体相。烧结时间对β－Ｆｅ－Ｓｉ２合金的热电性能有较大的影响，烧结时间地长．Ｓｅｅｂｅｃｋ系数和电阻率越小。
P-type Fe0.925Mn0.075Si2-0. 17wt. % Cu alloys were prepared by rapid solidification technique and sintering. Temperature dependences of transport properties of samples were investigated. XRD analysis revealed that rapidly solidified powders were composed of a and e. phase and converted completely into single β phase after sintered at 1373K and annealed for 21h at 1073K. Sintering time had great effects on transport properties. The longer sintering time, the less Seebeck coefficient and electrical resistivity.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2001年第3期280-281,共2页
Journal of Functional Materials
基金
国家自然科学基金(59771032)
教育部博士点基金(97033518)资助项目
关键词
Β-FESI2
热电材料
热电性能
β-FeSi2
thermoelectric materials
transport properties
