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Two kinds of turbostratic carbon coatings with different texture were deposited on SiC fibers using single filament chemical vapor deposition by changing substrate temperature: 920 and 1000 °C, labeled as C920 and C1000, respectively, followed by coating Ti17 matrix, and then SiCf/C920/Ti17 and SiCf/C1000/Ti17 composites were fabricated by hot isostatic pressing (HIP). C1000 possesses much stronger...
Carbon aerogels were synthesized at room temperature by a sol–gel polymerization route using resorcinol and formaldehyde as precursors, acetonitrile as solvent and hydrochloric acid as catalyst, followed by CO 2 supercritical drying and carbonization. FT-IR, SEM, XRD and nitrogen adsorption were used to characterize the microstructure of the aerogels. Results showed that the carbon aerogels...
A novel noncovalent and inorganic method was used to disperse multiwalled carbon nanotubes (MWCNTs) in aqueous solutions through alumina-coated silica (ACS) nanoparticle halos. MWCNTs were directly dispersed into a highly charged ACS nanoparticle aqueous solution without functionalization of their surfaces. The dispersed MWCNTs were characterized by transmission electron microscopy and atomic force...
This study describes the synthesis of doped polyaniline in its emeraldine salt form (PANI-ES) with carboxylic groups containing multi-walled carbon nanotubes (c-MWNTs) via in situ polymerization. Both Raman and FTIR spectra indicate that carboxylic acid groups formed at both ends and on the sidewalls of the MWNTs. Based on the π–π* electron interaction between aniline monomers and MWNT and hydrogen...
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