کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7887152 | 1509788 | 2018 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Protective coating based on manganese-copper oxide for solid oxide fuel cell interconnects: Plasma spray coating and performance evaluation
ترجمه فارسی عنوان
پوشش محافظتی بر اساس اکسید مس منگنز برای اتصالات سلول سوختی اکسید جامد: پوشش اسپری پلاسما و ارزیابی عملکرد
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کلمات کلیدی
سلول سوختی اکسید جامد، اتصالات فلزی، پوشش محافظ، اکسید اسپینل، پوشش اسپری پلاسما،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
چکیده انگلیسی
A solid oxide fuel cell (SOFC) stack requires metallic interconnects to electrically connect unit cells, while preventing fuel from mixing with oxidant. During SOFC operations, chromia scales continue to grow on the interconnect surfaces, resulting in a considerable increase of interfacial resistance, and at the same time, gaseous Cr species released from the chromia scales degrades the cathode performance. To address these problems, in this study, protective Mn2CuO4 coatings are fabricated on metallic interconnects (Crofer 22 APU) via a plasma spray (PS) process. The PS technique involves direct spray deposition of molten Mn2CuO4 onto the interconnect substrate and leads to the formation of high-density Mn2CuO4 coatings without the need for post-heat-treatment. The thickness, morphology, and porosity of the PS-Mn2CuO4 coating are found to depend on the processing parameters, including plasma arc power, gas flow rate, and substrate temperature. The PS-Mn2CuO4 coating fabricated with optimized parameters is completely impermeable to gases and has high adhesion strength on the interconnect substrate. Furthermore, no resistive chromia scales are formed at the coating/substrate interface during the PS process. As a result, the PS-Mn2CuO4-coated interconnects show a very low area-specific resistance below 10â¯mΩâ¯cm2 at 800â¯Â°C in air and excellent stability during both continuous operation and repeated thermal cycling. This work suggests that an appropriate combination of the material and coating process provides a highly effective protective layer for SOFC interconnects.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 10, July 2018, Pages 11576-11581
Journal: Ceramics International - Volume 44, Issue 10, July 2018, Pages 11576-11581
نویسندگان
Nurhadi S. Waluyo, Seong-Sik Park, Rak-Hyun Song, Seung-Bok Lee, Tak-Hyoung Lim, Jong-Eun Hong, Kwang Hyun Ryu, Won Bin Im, Jong-Won Lee,