Kinetics of crack healing for self-repair in glass-yttria stabilized zirconia composites for solid oxide fuel cell
Source abstract
Abstract
Solid oxide fuel cells (SOFCs) are promising for directly producing electricity and require sealing materials with long-term stability at high temperatures and in corrosive environments. Glass seals are promising but suffer from fracture because of the low fracture toughness. To overcome this limitation, our group has advanced a novel approach of self-repairable glass seals and related theoretical model for the SOFC. This approach is used for the first time to study the kinetics of crack healing and self-repair behaviors in glass-yttria stabilized zirconia (YSZ-10-30 wt%) composites. The addition of inert YSZ particles enhances the toughness and viscosity of the glass and helps in tailoring the crack healing response for the SOFC. The viscosities of glass-YSZ composites are extracted from the healing model and compared with the viscosity obtained independently from the dilatometric measurements and densification data using sintering models for demonstrating good agreement with the predictions of the model.Graphical abstractCrack healing behavior in a glass-10% yttria stabilized zirconia composite as a self-repairable seal for solid oxide fuel cell
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Research context
OpenAlex topics: Advancements in Solid Oxide Fuel Cells · Advanced ceramic materials synthesis · Concrete and Cement Materials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (22)
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