C/C‐SiC component for metallic phase change materials

Thanks to their high energy density and thermal conductivity, metallic Phase Change Materials (mPCM) have shown great potential to improve the performance of thermal energy storage systems. However, the commercial application of mPCM is still limited due to their corrosion behavior with conventional...

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Bibliographic Details
Published inInternational journal of applied ceramic technology Vol. 17; no. 5; pp. 2040 - 2050
Main Authors Stahl, Veronika, Shi, Yuan, Kraft, Werner, Lanz, Tim, Vetter, Peter, Jemmali, Raouf, Kessel, Fiona, Koch, Dietmar
Format Journal Article
LanguageEnglish
Published Malden Wiley Subscription Services, Inc 01.09.2020
Subjects
Carbon fibers
ceramic matrix composites (CMCs)
Computed tomography
Contact angle
Containers
Corrosion
Critical components
Energy storage
Fiber composites
Flux density
joints/joining
Mechanical properties
Mechanical tests
Microstructure
Performance enhancement
Phase change materials
Silicon carbide
Storage systems
Thermal conductivity
Thermal energy
Thermal storage
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Summary:Thanks to their high energy density and thermal conductivity, metallic Phase Change Materials (mPCM) have shown great potential to improve the performance of thermal energy storage systems. However, the commercial application of mPCM is still limited due to their corrosion behavior with conventional container materials. This work first addresses on a fundamental level, whether carbon‐based composite‐ceramics are suitable for corrosion critical components in a thermal storage system. The compatibility between the mPCM AlSi12 and the Liquid Silicon Infiltration (LSI)‐based carbon fiber reinforced silicon carbide (C/C‐SiC) composite is then investigated via contact angle measurements, microstructure analysis, and mechanical testing after exposure. The results reveal that the C/C‐SiC composite maintains its mechanical properties and microstructure after exposure in the strongly corrosive mPCM. Based on these results, efforts were made to design and manufacture a container out of C/C‐SiC for the housing of mPCM in vehicle application. The stability of the component filled with mPCM was proven nondestructively via computer tomography (CT). Successful thermal input‐ and output as well as thermal storage ability were demonstrated using a system calorimeter under conditions similar to the application. The investigated C/C‐SiC composite has significant application potential as a structural material for thermal energy storage systems with mPCM.
ISSN:1546-542X
1744-7402
DOI:10.1111/ijac.13570