We wish to thank Eric Lebraud from ICMCB-CNRS for the XRD measurements, Elisabeth Sellier from CREMEM for high-resolution SEM investigations, Dr. René Pailler from LCTS for the thermal treatments and Dr. Alain Pénicaud from CRPP for Raman spectroscopy measurements.
First Biosourced Monolithic Macroporous SiC/C Composite Foams (Bio-SiC/C(HIPE)) Bearing Unprecedented Heat Transport Properties†
Version of Record online: 23 JUL 2013
© 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Advanced Engineering Materials
Volume 15, Issue 10, pages 893–902, October 2013
How to Cite
Ungureanu, S., Sigaud, G., Vignoles, G. L., Lorrette, C., Birot, M., Deleuze, H. and Backov, R. (2013), First Biosourced Monolithic Macroporous SiC/C Composite Foams (Bio-SiC/C(HIPE)) Bearing Unprecedented Heat Transport Properties. Adv. Eng. Mater., 15: 893–902. doi: 10.1002/adem.201300015
- Issue online: 4 OCT 2013
- Version of Record online: 23 JUL 2013
- Manuscript Accepted: 21 MAY 2013
- Manuscript Received: 15 JAN 2013
For the first time SiC/C composite foams were prepared from concentrated emulsions by carbothermal reduction of biosourced precursors combining sodium silicate by lignin at 1400 °C. The composition of the materials was determined by XRD, FTIR and Raman analyses. Their porous structure was characterized by SEM, mercury intrusion porosimetry, and nitrogen sorption, while their thermal properties were measured by TGA and dynamic DSC. Concerning their heat transport properties, we found out that when the starting lignin content was increased, the final C/Si ratio, the specific surface area and the heat diffusivity increased as well. Its unprecedented high values were attributed to a cooperative effect between radiative heat transfer and the presence of partially graphitized carbon.