Detection of carbon nanostructures in carburized chromium-iron spinel

Abstract

It is established that nanostructures of various modifications are formed in a chromium-iron spinel matrix in the process of hydrocarbon pyrolysis at temperatures Т = 600-850°C. Investigations carried out by the methods of electron microscopy, x-ray diffraction analysis, infrared spectroscopy, and electron paramagnetic resonance demonstrate that nanosystems of three types: graphite crystallites with sizes of 6-22 nm, multilayered nanotubes, and plate carbon fibers are presented in the spinel matrix.