کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9760172 | 1498042 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Residual stresses in planar solid oxide fuel cells
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Residual stresses in planar solid oxide fuel cells Residual stresses in planar solid oxide fuel cells](/preview/png/9760172.png)
چکیده انگلیسی
The in-plane residual stress distribution in the electrolyte of an anode-supported planar solid oxide fuel cell has been determined using X-ray powder diffraction. Measurements have been carried out with half cells in green state, after co-firing and after anode reduction. The residual stress in the electrolyte is compressive. Values of about â560 MPa are determined at room temperature for an approximately 10 μm thick electrolyte layer on an oxidized â¼1.5 mm thick anode substrate, independent of location. Chemical reduction of the anode leads to a slight decrease of the compressive electrolyte stress to â520 MPa. At operation temperature (800 °C) the stress is by a factor of about two lower, but remains compressive. The electrolyte results are used to calculate the residual stress in the oxidized and in the reduced anode. Independent of the oxidation state a tensile stress of about 4 MPa is calculated. Implications for anode failure are discussed by comparing this value with the fracture stress of large 200 mm Ã 200 mm cells at a failure probability of 10â6.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 150, 4 October 2005, Pages 73-77
Journal: Journal of Power Sources - Volume 150, 4 October 2005, Pages 73-77
نویسندگان
W. Fischer, J. Malzbender, G. Blass, R.W. Steinbrech,