Heat capacity of the white pine biocarbon preform and the related biocarbon/copper composite

Autor:	I. A. Smirnov, Katherine T. Faber, T. S. Orlova, H. Misiorek, Andrzej Jeżowski, T. E. Wilkes, D. Wlosewicz, B. I. Smirnov
Rok vydání:	2009
Předmět:	Materials science Carbonization Composite number Analytical chemistry chemistry.chemical_element Condensed Matter Physics Mixture rule Heat capacity Copper Electronic Optical and Magnetic Materials Amorphous solid chemistry Pyrolysis Carbon
Zdroj:	Physics of the Solid State. 51:2264-2268
ISSN:	1090-6460 1063-7834
DOI:	10.1134/s1063783409110110
Popis:	This paper reports on measurements in the 80–300-K temperature interval of the heat capacity at constant pressure C_(p)(T) of high-porosity amorphous white pine carbon preforms (biocarbon) prepared by pyrolysis (carbonization) at T_(carb) = 1000 and 2400°C in an argon flow. The dependences C_(p)(T) for biocarbon/copper composites based on the carbon preforms obtained have also been determined. It is shown that the mixture rule holds for the composites, i.e., that C_(p)(T) of the composite is a sum of the heat capacities of the constituent materials taken in the corresponding ratios. Phonon mean free paths for the white pine carbon preforms prepared at T_(carb) = 1000 and 2400°C have been calculated and used to estimate the size of the nanocrystallites contributing to formation of the carbon frameworks of these preforms.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8df421c1566f6e1c97df89dd7475f102 https://doi.org/10.1134/s1063783409110110 Zobrazit plný text záznamu Full text from SpringerLink