کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1600168 1515870 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of annealing on thermoelectric properties of eutectic PbTe-Sb2Te3 composite with self-assembled lamellar structure
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Effect of annealing on thermoelectric properties of eutectic PbTe-Sb2Te3 composite with self-assembled lamellar structure
چکیده انگلیسی
The eutectic PbTe-Sb2Te3 composite with self-organized lamellar structure was synthesized using induction melting and the effects of annealing on the microstructure and thermoelectric properties were investigated. The PbTe and Sb2Te3 lamellae are crystallographically oriented with coherent interface, which are found to insignificantly affect the electronic flow. After annealed, the spheroidization of the lamellae occurs, and the carrier concentration decreases. Despite the increased phase boundaries, the lattice thermal conductivity increases with the annealing time. Largely due to the enhanced Seebeck coefficient, a maximum ZT ∼ 0.48 at 550 K for the sample annealed for 20 h at 573 K is achieved, showing a 60% improvement over that of the as-melted one.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 41, October 2013, Pages 63-69
نویسندگان
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