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Thermal conductivity analysis using three‐dimensional microstructures of gelation freezing derived cellular mullite
Author(s) -
Fukushima Manabu,
Hyuga Hideki,
Matsunaga Chika,
Yoshizawa YuIchi
Publication year - 2018
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.15539
Subject(s) - mullite , homogenization (climate) , thermal conductivity , materials science , microstructure , thermal conduction , finite element method , porosity , thermal , ceramic , composite material , conductivity , porous medium , mineralogy , thermodynamics , geology , chemistry , physics , biodiversity , ecology , biology
The relationship between thermal conductivity and unidirectional cellular mullite microstructures created with the freeze casting route is discussed using actual three‐dimensional (3D) images, in which a homogenization method was conducted with microscopic models created from 3D images, the temperature variation in macroscopic models by the finite element method ( FEM ), and local heat conduction in microscopic models. The simulation results were consistent with the experimental results. This image‐based modeling technique was thus confirmed to be a strong tool for the prediction of various thermal properties of porous ceramics.