Thermal Conductivity of Porous Silicon Carbide Derived from Wood Precursors

Biomorphic silicon carbide (bioSiC), a novel porous ceramic derived from natural wood precursors, has potential applicability at high temperatures, particularly when rapid temperature changes occur. The thermal conductivity of bioSiC from five different precursors was experimentally determined using...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2007-09, Vol.90 (9), p.2855-2862
Main Authors: Pappacena, K. E., Faber, K. T., Wang, H., Porter, W. D.
Format: Article
Language:English
Subjects:
09 BIOMASS FUELS
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
CERAMICS
Chemical industry and chemicals
Exact sciences and technology
Heat conductivity
HEAT FLUX
Heat transfer
Mathematical analysis
Miscellaneous
Object-oriented programming
Porosity
Porous materials
Precursors
Silicon carbide
SILICON CARBIDES
SPECIFIC HEAT
Technical ceramics
THERMAL CONDUCTIVITY
WOOD
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Summary:Biomorphic silicon carbide (bioSiC), a novel porous ceramic derived from natural wood precursors, has potential applicability at high temperatures, particularly when rapid temperature changes occur. The thermal conductivity of bioSiC from five different precursors was experimentally determined using flash diffusivity and specific heat measurements at temperatures ranging from room temperature to 1100°C. The results were compared with values obtained from object‐oriented finite‐element analysis (OOF). OOF was also used to model and understand the heat‐flow paths through the complex bioSiC microstructures.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2007.01777.x