کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9804138 1516479 2005 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermoelectric properties of Ag1−xPb18SbTe20 (x = 0, 0.1, 0.3)
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Thermoelectric properties of Ag1−xPb18SbTe20 (x = 0, 0.1, 0.3)
چکیده انگلیسی
Polycrystalline sintered samples of Ag1−xPb18SbTe20 (x = 0, 0.1, 0.3) were prepared by a solid-state reaction. The longitudinal and shear sound velocities were measured by an ultrasonic pulse-echo method at room temperature in order to evaluate the elastic moduli and Debye temperature. The elastic moduli and Debye temperature for Ag1−xPb18SbTe20 decrease with increasing x value. The thermal diffusivity was measured from room temperature to about 700 K. The thermal conductivity was evaluated from the thermal diffusivity and heat capacity. The value of thermal conductivity is 1.04 Wm−1 K−1 at 370 K for AgPb18SbTe20. The dimensionless figure of merit ZT of Ag1−xPb18SbTe20 was evaluated by using the data of the electrical resistivity and Seebeck coefficient obtained in the previous study. The maximum value of ZT is 0.33 at 673 K for Ag0.7Pb18SbTe20.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 387, Issues 1–2, 25 January 2005, Pages 52-55
نویسندگان
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