کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1290221 | 973320 | 2008 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The behavior of nickel and silver in a simulated solid oxide fuel cell environment
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Nickel, silver, and a nickel-silver composite have been tested in a simulated solid oxide fuel cell interconnect environment. The susceptibility of the interconnect to mechanical degradation as a result of environmental attack has been analyzed. The experimental results of this study demonstrate that silver is unstable in the interconnect environment, while nickel remains stable. A finite difference model has been developed to analyze how the simultaneous diffusion of hydrogen and oxygen into the interconnect can result in the nucleation of water vapor bubbles. In addition, a model developed by Raj and Ashby to describe the growth of cavities under creep conditions has been employed to predict the rate at which cavity growth will occur. Finally, a Ni-Ag composite was fabricated and studied as an interconnect in an attempt to avoid the mechanical degradation that occurs in silver, while maintaining a path for electrical conduction that is not degraded by oxidation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 185, Issue 2, 1 December 2008, Pages 1030-1039
Journal: Journal of Power Sources - Volume 185, Issue 2, 1 December 2008, Pages 1030-1039
نویسندگان
R.W. Jackson, F.S. Pettit, G.H. Meier,