The Effects of Reaction Temperature on Nanographites Supported by SiC Particles

Abstract:

Nanographites supported by silicon carbide (SiC) nanoparticles were prepared through one-step pyrolysis method using polycarbosilane (PCS) as the precursor at temperatures ranging from 1100°C~1400°C. The effects of reaction temperature on the morphology, microstructure and crystallinity of the graphite flakes on SiC particles were explored by means of SEM, TEM, RAMAN and XRD. The experimental results show that the desired products with core/shell structures can only be obtained at reaction temperatures higher than 1100°C. With the increase of reaction temperature (1250°C~1400°C), the thickness and the average size of sp² domains show an incremental trend before a decline while the density and the degree of deformation continuously improve. The possible mechanism for those changes was also discussed.

• Periodical: Applied Mechanics and Materials (Volume 711)
• Pages: 170-176
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.711.170
• Online since: December 2014
• Authors: Chen Chen*, Jin Shan Yu, Xin Gui Zhou, Chang Rui Zhang
• Keywords: Nanographites, One-Step Pyrolysis, Reaction Temperature, Silicon Carbide (SiC)

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