کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1606912 1516230 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructure and thermoelectric properties of hot-extruded Bi-Te-Se bulk materials
ترجمه فارسی عنوان
خصوصیات میکروارگانیسم و ​​ترموالکتریک مواد فشرده اکسترودر بی اکسیژن
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
چکیده انگلیسی
Highly dense n-type Bi2Te2.85Se0.15 bulk thermoelectric materials were fabricated by a mechanical alloying (MA) and hot-extrusion technique. The extrusion behavior, microstructure, texture, thermoelectric and mechanical properties have been investigated. The extruded samples exhibited fine-grained microstructure and preferred grain orientation. The basal planes in the extrudates were preferentially oriented parallel to the extrusion direction. As the extrusion temperature increased, the absolute value of the Seebeck coefficient and electrical resistivity were found to decrease, while the thermal conductivity increased. A largest dimensionless figure of merit value of 0.47 was achieved at room temperature for the sample extruded at 400 °C. Moreover, the extruded samples showed high hardness values.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 663, 5 April 2016, Pages 134-139
نویسندگان
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