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The effect of fuel electrode roughness on the properties of plasma sprayed solid oxide cells
University of Toronto, Department of Mechanical and Industrial Engineering, Toronto, ON, Canada.
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (PTW)ORCID iD: 0000-0002-2857-0975
University of Toronto, Department of Mechanical and Industrial Engineering, Toronto, ON, Canada.
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing.ORCID iD: 0000-0003-1181-0415
2017 (English)In: ECS Transactions, ISSN 1938-5862, E-ISSN 1938-6737, Vol. 78, no 1, 1477-1487 p.Article in journal (Refereed) Published
Abstract [en]

Solid oxide cell electrolytes fabricated by atmospheric plasma spraying are frequently found to have nonzero gas leak rates. Electrode surface roughness is known to have an influence on electrolyte leak rates. A jet of high velocity air, produced with an air knife, was aimed at the plasma plume during fuel electrode deposition to reduce the surface roughness prior to electrolyte deposition. The resulting fuel electrode masses, electrode compositions, and electrode surface roughnesses were measured for varying air knife inlet pressures. Surface asperity populations and maximum heights were significantly reduced using air knife pressures of > 6 bar at the expense of deposition efficiency. The distribution of surface gradients was also improved with the use of the air knife, but some regions with steep gradients still remained in surfaces prepared with an air knife pressure of 8 bar. © The Electrochemical Society.

Place, publisher, year, edition, pages
Electrochemical Society Inc. , 2017. Vol. 78, no 1, 1477-1487 p.
Keyword [en]
Air; Deposition; Electrodes; Electrolytes; Electrolytic cells; Fighter aircraft; Plasma jets; Plasma spraying; Solid oxide fuel cells (SOFC); Surface roughness, Atmospheric plasma spraying; Deposition efficiencies; Electrode composition; Electrode surface roughness; Inlet pressures; Solid-oxide cells; Surface asperities; Surface gradients, Solid electrolytes
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-11614DOI: 10.1149/07801.1477ecstScopus ID: 2-s2.0-85028464701OAI: oai:DiVA.org:hv-11614DiVA: diva2:1143306
Conference
15th International Symposium on Solid Oxide Fuel Cells, SOFC 2017; Hollywood; United States; 23 July 2017 through 28 July 2017
Note

cited By 0

Available from: 2017-09-21 Created: 2017-09-21 Last updated: 2017-09-21Bibliographically approved

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Gupta, Mohit KumarBjörklund, Stefan

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