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Chemical functionalization of multi-walled carbon nanotubes by coating with titanium

: Dettlaff-Weglikowska, Urszula; Koizhaiganova, Raushan; Piao, Mingxing; Kim, Do-Hyun; Kennedy, Gary P.; Glanz, Carsten; Kolaric, Ivica; Roth, Siegmar


Physica status solidi. B 249 (2012), Nr.12, S.2337-2340
ISSN: 0031-8957
ISSN: 0370-1972
Fraunhofer IPA ()
Carbon Nanotube (CNT); Nanotechnologie; nanotechnology; Metal Matrix Composite (MMC); Multi-Walled Carbon Nanotube (MWNT); chemical vapour deposition (CVD); Verbundwerkstoff; physikalische Eigenschaft; Beschichtung; chemische Abscheidung; Beschichtung mit Metall

In this study, we investigated the effect of coating multi-walled carbon nanotubes (MWNTs) with titanium using chemical vapor deposition. This coating process was carried out in a quartz tube, which was heated in a tubular furnace at 600 degrees C with an argon/hydrogen gas flow mixture; argon was bubbled through liquid TiCl4 for 1h. Under these conditions the weight of the MWNTs was found to increase by about 3.5%. Characterization of the chemically treated MWNTs was achieved using Raman spectroscopy, scanning electron microscopy, and X-ray diffraction. The presence of titanium was confirmed by energy-dispersive X-ray analysis. The functional properties of the Ti-coated MWNTs have been proved by the fabrication of aluminium based composites. Significant reinforcement of the extruded composites indicates strong interfacial bonding to the aluminium matrix.