TY - JOUR

T1 - A characteristic map as an approach for rapid estimating the thermal conductivity of high-temperature oxide ceramics demonstrated on 10Sc1CeSZ

AU - Gedik, Aydan

AU - Hesse, Jonas

AU - Kabelac, Stephan

N1 - Funding Information: The Deutsche Forschungsgemeinschaft (DFG) provided the experimental setup and materials as part of the major research instrumentation programm with contract number INST 187/630-1 FUGG . We would like to thank the Uni Bremen Campus GmbH (UBC) - Centre for Ceramic Materials for measuring the thermal diffusivity of the samples. Funding Information: The authors gratefully acknowledge the financial support by the Deutsche Forschungsgemeinschaft (DFG, funding code KA 1211/32-1 and KA 1211/32-2 ) for financial support.

PY - 2023/12/1

Y1 - 2023/12/1

N2 - This work presents an easy applicable method for estimating thermal conductivity of oxide ceramic samples in a high-temperature SOFC/SOEC system. An experimental investigation establishes a thermal conductivity map for various oxide ceramics in the temperature range of 700 - 900 °C. Material specific properties are determined using laser flash analysis, displacement measurement for density and differential scanning calorimetry for heat capacity. The total thermal conductivity, incorporating conduction and radiation, is assumed based on a linear relationship with temperature gradient. Deviations in measurements are attributed to increasing radiation effects. The method provides a rough estimation of thermal conductivity, with 8YSZ exhibiting good agreement with literature values and 10Sc1CeSZ showing a range of 2.3 (+0.32/-0.48) - 2.8 (+0.96/-1) W/mK.

AB - This work presents an easy applicable method for estimating thermal conductivity of oxide ceramic samples in a high-temperature SOFC/SOEC system. An experimental investigation establishes a thermal conductivity map for various oxide ceramics in the temperature range of 700 - 900 °C. Material specific properties are determined using laser flash analysis, displacement measurement for density and differential scanning calorimetry for heat capacity. The total thermal conductivity, incorporating conduction and radiation, is assumed based on a linear relationship with temperature gradient. Deviations in measurements are attributed to increasing radiation effects. The method provides a rough estimation of thermal conductivity, with 8YSZ exhibiting good agreement with literature values and 10Sc1CeSZ showing a range of 2.3 (+0.32/-0.48) - 2.8 (+0.96/-1) W/mK.

KW - 10Sc1CeSZ

KW - 8YSZ

KW - Electrolyte

KW - Heat conductivity

KW - High-temperature

KW - Oxide ceramic

KW - Solid oxide fuel cell (SOFC)

KW - Thermal conductivity

UR - http://www.scopus.com/inward/record.url?scp=85172939594&partnerID=8YFLogxK

U2 - 10.1016/j.ceramint.2023.09.132

DO - 10.1016/j.ceramint.2023.09.132

M3 - Article

AN - SCOPUS:85172939594

VL - 49

SP - 38015

EP - 38025

JO - Ceramics international

JF - Ceramics international

SN - 0272-8842

IS - 23

ER -