Thermo-Chemo-Mechanical Modelling of Mixed Conductors in Transient Stages

Olivier Valentin; Eric Blond; Nicolas Richet

doi:10.4028/www.scientific.net/AST.65.232

Paper Titles

Cobalt-Supported Clay as Catalytic Film Prepared by Electrophoretic Deposition for Hydrogen Release Applications
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Metal Oxides (such as Al₂O₃ and TiO₂) as Catalyst Supports for Hydrogen Release by Hydrolysis of Sodium Borohydride NaBH₄
p.209

Effect of an Oxides Composite Support of Ce(Sm)O₃-La(Sr)CrO₃ on Pd-Ni Alloy for Decomposition Activity of CH₄
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Soot and Ash Layer Characteristics in Ceramic Diesel Particulate Filters
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Thermo-Chemo-Mechanical Modelling of Mixed Conductors in Transient Stages
p.232

Creep Behavior of Yb-Doped Barium Cerate Perovskite
p.238

Photocatalytic Efficiency of ZnO/TiO₂ Composite Plates in Degradation of RR180 Dye Solutions
p.244

Etch Rate and Dimensional Accuracy of Machinable Glass Ceramics in Chemical Etching
p.251

Solid Oxide Electrolyte Based Oxygen Pump
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HomeAdvances in Science and TechnologyAdvances in Science and Technology Vol. 65Thermo-Chemo-Mechanical Modelling of Mixed...

Thermo-Chemo-Mechanical Modelling of Mixed Conductors in Transient Stages

Abstract:

This study deals with the modelling of the mechanical behaviour accounting for the expansion induced by the oxygen diffusion in MIECs membrane during semi-permeation transient stage. A dedicated model of chemical expansion and its numerical implementation is used to study the relationship between the mechanical stress and the oxygen flux. The impact of the ratio between oxygen bulk diffusion and surface exchange kinetics on mechanical stress in transient stage is discussed. At last, the need of a compromise between the oxygen flux performance and the mechanical reliability is underlined.

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Periodical:

Advances in Science and Technology (Volume 65)

Pages:

232-237

DOI:

https://doi.org/10.4028/www.scientific.net/AST.65.232

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Online since:

October 2010

Authors:

Olivier Valentin, Eric Blond, Nicolas Richet

Keywords:

Chemical Expansion, Mechanical Stress, Mixed Electronic Conductor, Mixed Ionic Conductor, Perovskite, Thermal Expansion, Transient Stage

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