کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
814560 1469221 2016 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermoelectric Performance of Sb-doped Mg2-xZnxSi (0≤x≤0.1) Solid Solutions
ترجمه فارسی عنوان
عملکرد ترموالکتریک محلول جامد Mg2-xZnxSi (0≤x≤0.1) دوپ شده با Sb
کلمات کلیدی
سیلیسید منیزیم؛ ویژگی ترموالکتریک؛ مواد ترموالکتریک؛ جایگزینی ایزو الکترونی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک مواد
چکیده انگلیسی

Mg2-xZnxSi0.99Sb0.01 (0≤x≤0.1) solid solutions were prepared by a B2O3 flux method combined with a spark plasma sintering (SPS) technique. The electrical conductivity, Seebeck coefficient and thermal conductivity were measured as a function of temperature from 300 K to 780 K. It is found that the lattice thermal conductivity reduces with Zn content increasing; however, the electrical conductivity first decreases and then increases. The underlying mechanism was discussed. Results show that among the samples, the maximum PF (power factor) of 1.76 mW·m−1·K−2 at x=0.075 is obtained at 780 K, about 18% higher than that of Mg2Si0.99Sb0.01. The lowest lattice thermal conductivity of 2.86 W·m−1·K−1 is obtained at 770 K for the x=0.1 sample. As a result, a maximum dimensionless figure of merit of 0.37 is obtained for Mg1.9Zn0.1Si0.99Sb0.01 at 780 K.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Rare Metal Materials and Engineering - Volume 45, Issue 4, April 2016, Pages 889–892
نویسندگان
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