The study of MWCNT/(pyrolityc metal) composites

The paper focuses on the study of composite materials based on multiwalled carbon nanotubes (MWCNT) with pyrolytic Fe and Cr coatings. MWCNT/(pyrolytic Fe) and MWCNT/(pyrolytic Cr) composites have been prepared by chemical deposition of metal-organic compounds from the vapor phase. The absorption cross section (CS) in the wide energy range of 250-900 eV and in the NEXAFS C1s-, Fe2p- and Cr2p-absorption edges were measured by total electron yield (TEY) method using the synchrotron radiation. The study has shown that top MWCNT layers in composite materials have no essential destruction; the thin nanosize pyrolytic Fe and Cr coatings are continuous and consist of oxides Fe3O4 and Cr2O3. The adhesion of Fe3O4 and Cr2O3 is provided by the chemical bonds between the carbon atoms of top MWCNT layers and the oxygen atoms of the coatings.