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Heat capacity of Bio-SiC and SiC/Si ecoceramics prepared from white eucalyptus, beech, and sapele tree wood |
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| Authors: | I A Smirnov B I Smirnov T S Orlova D Wlosewicz A Hackemer H Misiorek J Mucha A Jezowski J Ramirez-Rico J Martinez-Fernandez |
| Institution: | 1. Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021, Russia 2. Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okólna 2, Wroclaw, 50-422, Poland 3. Departamento de Fisica de la Materia Condensada—Instituto de Ciencia de Materiales de Sevilla (ICMSE), Universidad de Sevilla, Apartado de Correos 1065, Sevilla, ES41080, Spain |
| Abstract: | This paper reports on measurement of the heat capacity at constant pressure C p of silicon bio-carbide prepared within the 5–300 K temperature interval from beech tree wood (bio-SiC(BE)), and within 80–300 K, from tree wood of sapele (bio-SiC(SA)), as well as SiC/Si ecoceramics of beech, sapele, and white eucalyptus wood. It has been shown that in bio-SiC(BE) the measured heat capacity contains a significant contribution of surface heat capacity, whose magnitude decreases with increasing temperature. Of the ecoceramics, only SiC/Si(SA) characterized by a high enough porosity has revealed a small contribution to the heat capacity coming from its surface component. The experimental results obtained are discussed. |
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