Bamboo-Like Carbon fibers growth mechanism

• Autores: Luis Sousa Lobo
• Localización: Boletín del Grupo Español del Carbón, ISSN-e 2172-6094, Nº. 54, 2019, págs. 66-69
• Idioma: inglés
• Enlaces
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• Resumen

  • Bamboo-like growth behavior of carbon fibers is explained. There is a requirement to have this type of growth: to operate above the Tammann temperature of the catalyst. The metal nanoparticle can change shape during reaction (sintering-like behavior) so that CNT growth adjusting geometry. At nanoscale, Fick’s laws still apply. Nanoparticles with a diameter below 20 nm show a reduction of melting point (mp) and Tammann temperature (TTa).