کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7731974 | 1497944 | 2015 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Residual stresses and strength of multilayer tape cast solid oxide fuel and electrolysis half-cells
ترجمه فارسی عنوان
استرس های باقی مانده و مقاومت چند قطبی از مواد جامد اکسید جامد و نیمه سلولی الکترولیز
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کلمات کلیدی
سلولهای الکترولیز اکسید جامد، سلول های سوختی اکسید جامد، ریخته گری نوار چند لایه، استرسهای باقی مانده، قدرت مکانیکی،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
The cost-effectiveness of Solid Oxide Cells production can be improved by introducing “multilayer-tape-casting” (MTC: sequential casting of the layers) and co-sintering of the half-cells. MTC additionally results in more homogeneous layers with strong interfaces. However, the thermal expansion coefficient (TEC) mismatch between the layers, cumulated from high temperature, induces significant residual stresses in the half-cells. Furthermore, it has been observed that MTC half-cells with 4 layers (MTC4: support, fuel electrode, electrolyte and barrier layer) are sometimes more fragile to handle than those with 3 layers (MTC3: without barrier layer). The bending strength of MTC3 and MTC4 under various loading orientations (electrolyte on the tensile or compressive side of the loading) is compared. The analysis, by taking residual stresses into account, shows that the strength of the half-cells with the electrolyte on the compressive side corresponds to the strength of the support. With the loading in the other direction (electrolyte on the tensile side), the origin of the failure is in a different layer for MTC3 (fuel electrode) and for MTC4 (barrier layer). In order to decrease the tensile residual stresses, especially in the outer barrier-layer, possible changes to the layer properties are discussed and some optimization guidelines proposed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 288, 15 August 2015, Pages 243-252
Journal: Journal of Power Sources - Volume 288, 15 August 2015, Pages 243-252
نویسندگان
Benoit Charlas, Henrik Lund Frandsen, Karen Brodersen, Peter Vang Henriksen, Ming Chen,