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US 8,261,961 B2Granted
Metal matrix carbon nanotube composite material and method of making same
AssigneeLockheed Martin Corporation
InventorCraig A. Brice
Life of this patent
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Abstract
A solid state method for the preparation of composite materials incorporating metal and nano materials is provided, wherein nano materials are deposited on a substrate and incorporated into the substrate structure by friction stir welding. Also provided are composite materials that include nano materials, which are prepared by friction stir welding.
Claims17
A method for the preparation of composite material comprising nanomaterials, the method comprising the steps of:
- providing a plurality of metal layers and a plurality of nanomaterial layers, wherein each metal layer comprises one of the nanomaterial layers deposited on the surface of the metal layer;
- stacking the metal layers on each other to create layered structure with the nanomaterial layers alternating with the metal layers;
- and
- applying a friction stir welding tool to a surface of the layered structure to generate heat to mix the nanomaterial layers and the metal layers of the layered structure and produce a composite structure having nanomaterials integrated therein.
1 more element
A method for the preparation of an aluminum-carbon nanotube composite structure, the method comprising the steps of:
- providing a plurality of aluminum substrates, said aluminum substrates having a thickness of between about 0.002 and about 0.01 inches;
- depositing a plurality of carbon nanotube layers on the aluminum substrates, wherein said carbon nanotube layers are applied to the aluminum substrates as a solution, said solution comprising carbon nanotubes and a solubilizing solvent;
- removing the solubilizing solvent from the carbon nanotube layers on the aluminum substrates;
- stacking the plurality of aluminum substrates having the carbon nanotube layers deposited thereon on top of each other to produce a layered structure having alternating layers of aluminum substrates and carbon nanotube layers;
- and
- applying a friction stir welding tool to a surface of the layered structure to heat the alternating layers of the layered structure to produce a composite material, said composite material comprising aluminum and carbon nanotubes integrally mixed.
3 more elements
Dependencies are inferred from the claim text.