کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8948509 | 1645668 | 2018 | 35 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Studies on cermet behavior of Ni doped YSZ
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A simple and cost effective combustion process is employed to prepare Ni/YSZ cermet from an aqueous solution containing ZrO(NO3)2·6H2O, Y(NO3)3·6H2O, Ni(NO3)2·6H2O and urea followed by H2 reduction. As prepared cermet was characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), field emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy techniques. Processed powder of NiO-YSZ was found to be in crystalline form with homogeneous mixture of YSZ and NiO phases. On reduction, its mixed conductivity is suppressed partially. The impedance and dielectric properties of the cermet were studied over a frequency range 10â¯Hz to 2â¯MHz at different temperatures. M Ì´ H behavior at different temperature (down to 5â¯K) including ZFC and FC at 500â¯Oe were studied. To understand and corroborate the conductivity behavior and mechanism involved with the magnetic Ni ion mediated YSZ cermet, we have also studied the electric field induced polarization behavior and predict that Ni magnetic ion has specific role towards the contribution of conductivity mechanism generally included in Ni/YSZ cermet used for SOFC applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 15, 15 October 2018, Pages 18243-18249
Journal: Ceramics International - Volume 44, Issue 15, 15 October 2018, Pages 18243-18249
نویسندگان
V. Mohanta, S. Otta, B.K. Roul,