Duplex-aluminium material based on aluminium with a first...

B - Operations – Transporting – 22 – F

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B22F 7/02 (2006.01) B32B 5/00 (2006.01) C22C 1/00 (2006.01) C23C 4/00 (2006.01) C23C 24/00 (2006.01) C23C 28/00 (2006.01)

Patent

CA 2692959

The invention relates to the processing of a composite material in particle or powder form, containing carbon nanotubes (CNTs) wherein, in the material, for example a metal is layered in a thickness of 10 nm to 500,00 nm alternately with layers of CNT in a thickness of 10 nm to 100,000 nm. The material is produced by mechanical alloying, i.e. by repeated deformation, breaking and welding of metal particles and CNT particles, preferably by milling in a pebble mill, containing a milling chamber and milling pebbles as milling bodies and a rotating body to produce highly energetic pebble collisions. To produce duplex-aluminium, a method is described in which a material is alloyed as a combination of the composite material and an aluminium alloy with different properties in an Ospray process.

L'invention concerne le traitement d'un matériau composite sous forme particulaire ou pulvérulente contenant des nanotubes de carbone (CNT), ledit matériau comprenant par exemple un métal stratifié en couches d'épaisseur comprise entre 10 et 500.000 nm, en alternance avec des couches de CNT d'épaisseur comprise entre 10 et 100.000 nm. Ledit matériau est produit par alliage mécanique, c.-à-d. par déformation réitérée, concassage et soudage de particules de métal et de particules de CNT, de préférence par broyage dans un broyeur à billes, comprenant un compartiment de broyage et des billes de broyage comme corps de broyage, ainsi qu'un corps rotatif pour produire des collisions de billes à haut pouvoir énergétique. L'invention concerne également un procédé utilisé pour produire de l'aluminium duplex, selon lequel un matériau est allié sous forme de combinaison du matériau composite et d'un alliage d'aluminium avec différentes propriétés dans le cadre d'un procédé Osprey.

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