Structural Characterization of Graphite Materials Prepared from Anthracites of Different Characteristics: A Comparative Analysis
2004; American Chemical Society; Volume: 18; Issue: 2 Linguagem: Inglês
10.1021/ef030144+
ISSN1520-5029
AutoresD. González, Miguel A. Montes‐Morán, Isabel Suárez‐Ruíz, Ana B. Garcı́a,
Tópico(s)Fiber-reinforced polymer composites
ResumoGraphite materials were prepared from two Spanish anthracites, AF and ATO, by heating at different temperatures within the range 2000−2800 °C. XRD and Raman spectroscopy were employed to characterize the degrees of crystallinity and crystal orientation of the materials. In addition to studying the evolution of typical crystal parameters such as interlayer spacing, d002, and crystallite sizes, La and Lc, with temperature, this work aimed to evaluate the influence of elemental composition, texture (as measured by optical microscopy), and mineral matter of the raw anthracites on their ability to graphitize. Two temperature segments were discerned during the development of crystallinity. The first segment exhibited major improvements in crystal parameters, which afterward reached a plateau value. Raman parameters indicated that further improvement in crystal orientation could be obtained after heating at the highest temperature (2800 °C). The limiting temperature at which the materials showed their highest de...
Referência(s)