کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7898766 1510137 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sintering behavior, microstructure and thermoelectric properties of calcium cobaltite thick films for transversal thermoelectric multilayer generators
ترجمه فارسی عنوان
رفتار پخت، ریزساختار و خواص ترموالکتریک فیلم های ضخیم کبالت کلسیم برای ژنراتورهای چند لایه ترموالکتریک
کلمات کلیدی
اکسید ترموالکتریک، ژنراتور ترموالکتریک، چند لایه ،،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
The sintering behavior and the thermoelectric performance of Ca3Co4O9 multilayer laminates were studied, and a multilayer thermoelectric generator was fabricated. Compacts and multilayer samples with anisotropic microstructure and residual porosity were obtained after conventional sintering at 920 °C, whereas dense and isotropic multilayer samples were prepared by firing at 1200 °C and reoxidation at 900 °C. A hot-pressed sample has a dense and anisotropic microstructure. Samples sintered at 920 °C exhibit low electrical conductivity due to the low density, whereas the Seebeck coefficient is not sensitive to preparation conditions. However, thermal conductivity of multilayers is very low, and, hence acceptable ZT values are obtained. A transversal multilayer thermoelectric generator (TMLTEG) was fabricated by stacking layers of Ca3Co4O9 green tapes, AgPd conductor printing, and co-firing at 920 °C. The TMLTEG has a power output of 3 mW at ΔT = 200 K in the temperature interval of 25 °C to 300 °C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 38, Issue 4, April 2018, Pages 1600-1607
نویسندگان
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