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Л. Л. Сартинская
«Формирование и рост нанотрубок и вискерсов при нагреве в оптической печи без катализаторов »
PACS numbers: 61.48.De, 62.23.Pq, 68.37.Hk, 68.37.Lp, 68.70.+w, 81.05.Je, 81.07.De
The results on a catalyst-free synthesis of new structures of boron nitride and BN–lampblack composite are presented. Light-induced heating of fine-grained graphite-like h-BN powder and h-BN–lampblack composite is performed. The new structures are fabricated in the flow of dried and purified nitrogen in an optical furnace. Structure and phase composition are studied using transmission electron microscopy (TEM), scanning electron microscopy (SEM), optical microscopy, and x-ray diffraction (XRD). As shown, the obtained whiskers consist of the multiwalled nanotubes, which are covered by a polycrystal-line shell. The processes of synthesis, formation and growth of the nanostructures in the optical furnace are analysed. A qualitative model of formation and growth of BN nanotubes and whiskers, which is based on outlet of gas from powders and evo-lution of gas bubbles, is proposed.