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Microstructure, elastic and inelastic properties of partially graphitized biomorphic carbons

Opened Access Microstructure, elastic and inelastic properties of partially graphitized biomorphic carbons

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Autor: Martínez Fernández, Julián
Ramírez Rico, Joaquín
Gutierrez Pardo, Antonio Anselmo
Orlova, T. S.
Kardasheva, B. K.
Smirnov, B. I.
Departamento: Universidad de Sevilla. Departamento de Física de la Materia Condensada
Fecha: 2015-03
Publicado en: Physics of the Solid State, 57 (3), 586-591.
Tipo de documento: Artículo
Resumen: The microstructural characteristics and amplitude dependences of the Young's modulus E and internal friction (logarithmic decrement delta) of biocarbon matrices prepared by beech wood carbonization at temperatures T (carb) = 850-1600A degrees C in the presence of a nickel-containing catalyst have been studied. Using X-ray diffraction and electron microscopy, it has been shown that the use of a nickel catalyst during carbonization results in a partial graphitization of biocarbons at T (carb) a parts per thousand yen 1000A degrees C: the graphite phase is formed as 50- to 100-nm globules at T (carb) = 1000A degrees C and as 0.5- to 3.0-mu m globules at T (carb) = 1600A degrees C. It has been found that the measured dependences E(T (carb)) and delta(T (carb)) contain three characteristic ranges of variations in the Young's modulus and logarithmic decrement with a change in the carbonization temperature: E increases and delta decreases in the ranges T (carb) < 1000A degrees C and T (carb)...
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Cita: Martínez Fernández, J., Ramírez Rico, J., Gutierrez Pardo, A.A., Orlova, T.S., Kardasheva, B.K. y Smirnov, B.I. (2015). Microstructure, elastic and inelastic properties of partially graphitized biomorphic carbons. Physics of the Solid State, 57 (3), 586-591.
Tamaño: 1.006Mb
Formato: PDF

URI: http://hdl.handle.net/11441/64842

DOI: 10.1134/S106378341503018X

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