کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1606799 1516228 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improvement of thermoelectric power of n-type earth-abundant iron rich alloy by microstructure engineering
ترجمه فارسی عنوان
بهبود قدرت ترموالکتریک از آلیاژ غنی از آهن غنی از زمین با استفاده از مهندسی ریز ساختار
کلمات کلیدی
آلیاژ غنی آهن قدرت ترموالکتریک، ریز ساختار، کارابید وانادیوم، کاربید کروم،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
چکیده انگلیسی
Due to the exhaustion of rare metal resources and the hazard of toxic material to the environment, development of cost-effective, nontoxic, and earth-abundant thermoelectric materials has become more urgent. This study introduces a nontoxic, earth abundant n-type iron-based cost-effective Fe-2.3C-Si-5Mn-7V-8Cr thermoelectric material that is prepared by a simple melting method. Significant increase in both electrical conductivity and Seebeck coefficient are achieved by several heat treatment processes to optimize the distribution and grain size of VC, Cr23-xFexC6 typed chromium carbide as well as base matrix. As a result, the power factor of the sample that is normalized at 1150 °C is about 0.75 mWm−1K −2 in maximum value, which is 2.6 times larger than that (0.29 mWm−1K−2) of as-cast sample. The highest ZT value of the sample that is normalized at 1150 °C is 0.028 at 868 K, which is 4.3 times larger than that of as-cast sample (0.0065 at 964 K) in present study, indicating that a proper heat treatment process would remarkably enhance ZT value. This research provides extremely valuable data for the future researches on thermoelectric alloys.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 665, 25 April 2016, Pages 7-12
نویسندگان
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