Laser Induced Modifications of Carbon Nanotube Composite Surfaces

Laser Induced Modifications of Carbon Nanotube Composite Surfaces

Ayman Bassil (1) , Pascal Puech (1) , Wolfgang Bacsa , P. S. Pizani , R. G. Jasinevicius , Philippe Demont (2) , Sophie Barrau (2) , Colette Lacabanne (2) , Revathi Bacsa (2) , Emmanuel Flahaut (2)

1 Laboratoire Physique des Solides de Toulouse
2 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux

Carbon nanotubes epoxy composites have been processed with high power laser pulses and micro-machined with a single crystal diamond tool. The effect of the dispersion of the carbon nanotubes (CNTs, 0.4 wt %) in the epoxy resin and carbon nanotube interaction with the composite matrix have been probed using spectroscopic Raman mapping. While the micromachined surface maintains a good electrical conductivity after machining, the surface is poorly conductive after laser ablation. Laser processing (power 150 J/pulse, 1064 nm) transforms the surface of the carbon nanotube nanocomposite up to a distance of 25 mm. AFM images show that the diamond machined surface reduces the composite surface roughness.

Mots clés: nanotubes; composites; Raman spectroscopy; laser processing; machining

Domaines: Matériaux

Ayman Bassil, Pascal Puech, Wolfgang Bacsa, P. S. Pizani, R. G. Jasinevicius, et al.. Laser Induced Modifications of Carbon Nanotube Composite Surfaces. Japanese Journal of Applied Physics, 2006, Japanese Journal of Applied Physics, 45 (10A), pp.7776-7779. ⟨10.1143/JJAP.45.7776⟩. ⟨hal-02484478⟩