Thermal conductivity of porous SiC composite ceramics derived from paper precursor

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autor(en): Popovska N, Alkhateeb E, Fröba AP, Leipertz A
Zeitschrift: Ceramics International
Verlag: Elsevier
Jahr der Veröffentlichung: 2010
Band: 36
Seitenbereich: 2203-2207
ISSN: 0272-8842
Sprache: Englisch


Abstract


Biomorphic porous SiC composite ceramics were produced by chemical vapor infiltration and reaction (CVI-R) technique using paper precursor as template. The thermal conductivity of four samples with different composition and microstructure was investigated: (a) C-template, (b) C-SiC, (c) C-SiC-Si3N4 and (d) SiC coated with a thin layer of TiO2. The SiC-Si3N4 composite ceramic showed enhanced oxidation resistance compared to single phase SiC. However, a key property for the application of these materials at high temperatures is their thermal conductivity. The later was determined experimentally at defined temperatures in the range 293-373 K with a laser flash apparatus. It was found that the thermal conductivity of the porous ceramic composites increases in the following order: C-template < C-SiC < C-SiC-Si3N4 < SiC-TiO2. The results were interpreted in regard to the porosity and the microstructure of the ceramics. (C) 2010 Elsevier Ltd and Techna Group S.r.l. All rights reserved.



FAU-Autoren / FAU-Herausgeber

Alkhateeb, Emad Dr.-Ing.
Lehrstuhl für Chemische Reaktionstechnik
Fröba, Andreas Paul Prof. Dr.-Ing.
Professur für Advanced Optical Technologies - Thermophysical Properties
Leipertz, Alfred Prof. Dr.-Ing.
Lehrstuhl für Technische Thermodynamik
Popovska, Nadejda Prof. Dr.
Technische Fakultät


Zusätzliche Organisationseinheit(en)
Erlangen Graduate School in Advanced Optical Technologies


Zitierweisen

APA:
Popovska, N., Alkhateeb, E., Fröba, A.P., & Leipertz, A. (2010). Thermal conductivity of porous SiC composite ceramics derived from paper precursor. Ceramics International, 36, 2203-2207. https://dx.doi.org/10.1016/j.ceramint.2010.05.028

MLA:
Popovska, Nadejda, et al. "Thermal conductivity of porous SiC composite ceramics derived from paper precursor." Ceramics International 36 (2010): 2203-2207.

BibTeX: 

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