Thermal conductivity of porous SiC composite ceramics derived from paper precursor

Popovska N, Alkhateeb E, Fröba AP, Leipertz A (2010)


Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2010

Journal

Publisher: Elsevier

Book Volume: 36

Pages Range: 2203-2207

DOI: 10.1016/j.ceramint.2010.05.028

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.

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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.

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