کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1445446 1509592 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced thermoelectric and mechanical properties of zone melted p-type (Bi,Sb)2Te3 thermoelectric materials by hot deformation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Enhanced thermoelectric and mechanical properties of zone melted p-type (Bi,Sb)2Te3 thermoelectric materials by hot deformation
چکیده انگلیسی

Zone-melted bismuth antimony telluride alloys have been the most widely applied commercial thermoelectric (TE) materials for decades. In this work it is demonstrated that hot deformation can enhance both TE properties and mechanical properties of zone-melted (Bi,Sb)2Te3 alloys. The hot deformation modifies the microstructure and induces a donor-like effect to adjust the carrier concentration and significantly reduce the lattice thermal conductivity. A high dimensionless figure of merit (ZT) of 1.36 at 400 K is obtained in Bi0.4Sb1.6Te3 after hot deformation, and also the average ZT is ∼1.2 in the temperature range of 300–525 K, which makes the alloy suitable for low temperature power generation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 84, 1 February 2015, Pages 385–392
نویسندگان
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