Commercial alkaline earth boroaluminosilicate glasses for sealing solid oxide cell stacks. Part <scp>II</scp>: Characterization of devitrification and glass‐ceramic phase assemblages

Agersted, Karsten; Balić-Žunić, Tonči

doi:10.1111/ijac.12834

Cited by 2 publications

(4 citation statements)

References 30 publications

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“…Sealing materials must prevent oxidizing and reducing gases from mixing on both sides of the cells, leaking out of the stack, and preventing a short-circuiting across the electrolyte. [6][7][8] The presence of heterogeneous components in the SOCs stack, as well as thermal nonuniformity, causes uneven distribution of thermal and chemical strains and, as a result, stresses are generated in different components. Failure of components in respective layers will not only reduce the efficiency of the individual layer but also potentially spreads damage to other layers.…”

Section: Methods Of Characterizationmentioning

confidence: 99%

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Advanced analysis of flexural test results of sealant for solid oxide cells

Hasanabadi

Kokabi

Faghihi-Sani

et al. 2021

Int J Applied Ceramic Tech

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The conventional relations for calculating the fracture stresses consider only elastic deformation but ignore viscoelastic and viscoplastic behaviors. Measuring the joining strength of a composite glass sealant‐metallic interconnect specimen at solid oxide cell application relevant at high temperatures is a case where such effects can become significant. In the current study, three‐point and four‐point bending test results were analyzed using the finite element method (FEM) to assess systematic and random errors. It is shown that plastic deformation of the steel interconnect material at high temperature, although having a large effect on the stress distribution in the steel/glass–ceramic/steel specimen, does not cause a significant difference in the FEM‐derived true and the standard equation‐based analytically derived flexural stress values. It is also observed that even if the viscous flow of the glass–ceramic is considered in the simulations, the samples’ behavior in a realistic testing condition is not biased significantly by inelastic behavior due to the short testing time.

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Section: Methods Of Characterizationmentioning

confidence: 99%

“…One of the most important challenges in the manufacturing and commercialization of SOCs is the sealing of the stack. Sealing materials must prevent oxidizing and reducing gases from mixing on both sides of the cells, leaking out of the stack, and preventing a short‐circuiting across the electrolyte 6–8 …”

Section: Introductionmentioning

confidence: 99%

Advanced analysis of flexural test results of sealant for solid oxide cells

Hasanabadi

Kokabi

Faghihi-Sani

et al. 2021

Int J Applied Ceramic Tech

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“…Many researchers 160–176 have investigated the crystallization of CAS (CaO‐Al 2 O 3 ‐SiO 2 ) glasses. CaO‐based borosilicate glasses have high CTE than BaO‐ and SrO‐based glasses 169 .…”

Section: Effect Of Different Glass Constituents On Sealing Propertiesmentioning

confidence: 99%

“…31 However, the BaO-containing glass sealant required high temperature for sealing to achieve proper gas tightness due to its higher crystallization rate with high viscosity and poor wettability to adhere with interconnecting materials. 31 CaO-containing glasses Many researchers [160][161][162][163][164][165][166][167][168][169][170][171][172][173][174][175][176] have investigated the crystallization of CAS (CaO-Al 2 O 3 -SiO 2 ) glasses. CaO-based borosilicate glasses have high CTE than BaO-and SrO-based glasses.…”

mentioning

confidence: 99%

Review on silicate and borosilicate‐based glass sealants and their interaction with components of solid oxide fuel cell

Singh

Walia

2021

Intl J of Energy Research

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A lot of research is going on in the field of glass science to commercialize solid oxide fuel cells (SOFCs). Still, it is a big challenge to develop appropriate glass sealants for a longer duration and sustaining in the operating conditions of this power source. Mixed alkaline earth metal oxides containing silicate or borosilicate glasses could be most suitable as a rigid glass sealant in SOFCs in comparison with borate-and phosphate-based glass sealants. In this review article, the need for the sealants in the planar design of SOFCs, the effect of different modifiers, and intermediate oxides on sealing properties of glasses and glassceramics, particularly, silicate-and borosilicate-based glass sealants have been reviewed. Interaction study of glass sealants with common electrolytes and interconnect materials is also overviewed in this article. In addition to these, future perspectives and suggestions for suitable seal development are also proposed. Novelty statementThis review article is related to the glass sealants for a highly efficient and environment friendly solid oxide fuel cell energy conversion device. Still, it is a big challenge to develop an appropriate sealant to commercialize this energy device. This article provides the researchers with not only progress and latest development in the field of glass sealants but also suggestion and future prospects to develop the sealants.

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Commercial alkaline earth boroaluminosilicate glasses for sealing solid oxide cell stacks. Part II: Characterization of devitrification and glass‐ceramic phase assemblages

Cited by 2 publications

References 30 publications

Advanced analysis of flexural test results of sealant for solid oxide cells

Advanced analysis of flexural test results of sealant for solid oxide cells

Review on silicate and borosilicate‐based glass sealants and their interaction with components of solid oxide fuel cell

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