Performance of Different Glass‐Ceramic Sealants for a Planar SOFC Concept

Schwickert, T.; Diekmann, Uwe; Geasee, P.; Conradt, Reinhard

doi:10.1002/3527607420.ch37

Cited by 2 publications

(2 citation statements)

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“…One typical example is the rigid glass ceramic seals, in particular those made from barium calcium aluminosilicate (BCAS) base glasses. 25,[153][154][155][156][157] Work by Yang et al [158][159][160] found that ferritic stainless steel interconnect candidates reacted extensively with the BCAS sealing glass ceramic resulting in an interface that was more prone to defects. For traditional chromia forming stainless steels, the extent and nature of their interactions with the glass ceramic depended on the exposure conditions and/or proximity of the interface of sealing glass and ferritic stainless steel to the ambient air.…”

Section: Chemical Compatibility With Adjacent Componentsmentioning

confidence: 99%

Recent advances in metallic interconnects for solid oxide fuel cells

Yang¹

2008

International Materials Reviews

198

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With the reduction in solid oxide fuel cell (SOFC) operating temperatures into the range 650-800uC, cost effective metallic materials, in particular high temperature oxidation resistant alloys, have become promising candidates, in place of ceramic counterparts, for construction of interconnects in SOFC stacks. For a lifetime of thousands of hours, the alloys must demonstrate excellent surface, structural and electrical stability, and compatibility with other components in SOFC stacks in a very challenging environment. The present paper provides a critical review of metallic interconnects for SOFCs with a focus on recent progress in materials development, as well as advances in understanding materials degradation and interfacial phenomena under the SOFC operating conditions. It also attempts to provide guiding principles for the development of optimised, cost effective metallic interconnect materials that can demonstrate satisfactory life time stability and performance.

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Section: Chemical Compatibility With Adjacent Componentsmentioning

confidence: 99%

Recent advances in metallic interconnects for solid oxide fuel cells

Yang¹

2008

International Materials Reviews

198

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“…While sealing the media from each other, mechanical and thermal mismatch of the stack components should be compensated to mechanical acceptable levels. Recent glass-ceramic materials are preferred in many rigid sealing concepts of SOFC stacks (3,4,5). They combine moderate sealing loads with minor restrictions in stack design and provide sufficient gas tightness for midterm operation over some 1000 h. The thermal expansion coefficient (TEC) of glass-ceramics can be adapted to other stack components by controlling the phase content of the partially crystallized glass and enables thermal cycles during stack operation with moderate heating and cooling rates (6).…”

Section: Introductionmentioning

confidence: 99%

Microstructure-Based Damage Modelling of Plasma Sprayed Ceramic Coatings in SOFC-Layer Systems

et al. 2015

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Solid oxide fuel cells (SOFC) promise interesting energy conversion systems for mobile and stationary usage. High temperatures enable the use of a variety of hydrocarbons fuels. These temperatures intensify chemical reactions, and a compromise between beneficial and harmful side effects on a SOFC has to be defined. For economical reasons, a SOFC design is required, applicable for batch-production leading to a staple of finely arrange structures to separate fuel and oxidizing agent reliably. In this work, we apply a holistic approach to include macro- and microstructural details into a holistic numerical model. A newly developed self-healing material is investigated. Using subroutine techniques in ABAQUS, we could simulate self-healing materials under realistic conditions, derive understanding of failure mechanism paths to forecast material over service lifetime.

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Performance of Different Glass‐Ceramic Sealants for a Planar SOFC Concept

Cited by 2 publications

References 0 publications

Recent advances in metallic interconnects for solid oxide fuel cells

Recent advances in metallic interconnects for solid oxide fuel cells

Microstructure-Based Damage Modelling of Plasma Sprayed Ceramic Coatings in SOFC-Layer Systems

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