کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5461173 1516184 2017 29 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Rapid synthesis of zinc and nickel co-doped tetrahedrite thermoelectrics by reactive spark plasma sintering and mechanical alloying
ترجمه فارسی عنوان
سنتز سریع ترموالکتریک های تتراهیدریت با دوزهای مس و نیکل با استفاده از اسپکتروسکوپی واکنشگر و آسیک کردن
کلمات کلیدی
مواد ترموالکتریک، تترادریت، تلنگر پلاسما جرقه فعال آلیاژ مکانیکی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
چکیده انگلیسی
Tetrahedrite offers advantages over state-of-the-art thermoelectrics, such as lead telluride, because of its low cost and environmentally friendly composition. However, typical sealed-tube synthesis of tetrahedrite can require multiple days or weeks. In this study, tetrahedrite co-doped with nickel and zinc was synthesized by two different approaches which both require significantly less time than the conventional furnace-ampoule technique. The first technique utilizes a short ball milling step followed by reactive spark plasma sintering to form tetrahedrite, and the entire process requires less than 2 h of total synthesis time. The second method involves mechanical alloying to obtain single-phase tetrahedrite, combined with spark plasma sintering (SPS) for densification. Thermoelectric properties were measured and compared for samples of composition Cu10Ni2-xZnxSb4S13 (x = 0, 0.5, 1, 1.5) made by both techniques. Peak ZT values were obtained for Cu10Ni2Sb4S13 with ZT = 0.66 at 673 K for SPS reacted and mechanically alloyed samples. Transport properties are comparable between the two techniques, and this provides evidence that supports reactive spark plasma sintering as a viable synthetic technique for tetrahedrite thermoelectric materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 710, 5 July 2017, Pages 794-799
نویسندگان
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