Ceramic matrix nanocomposites containing carbon nanotubes for enhanced mechanical behavior
AssigneeRensselaer Polytechnic Institute
InventorsSekyung Chang, Robert H. Doremus, Richard W. Siegel, Pulickel M. Ajayan
Life of this patent
Estimating the term…
Abstract
A ceramic matrix nanocomposite having enhanced mechanical behavior is made up of a nanotube filler composed of at least one nanotube material, and a ceramic matrix composed of a nanocrystalline ceramic oxide. A method for producing ceramic articles having improved fracture toughness includes combining of a nanotube filler made up of a nanotube material and a ceramic matrix made up of a nanocrystalline ceramic oxide, forming an article therefrom, and sintering the article under elevated pressure at elevated temperature.
Claims28
A ceramic matrix nanocomposite comprising a nanotube filler and a ceramic matrix, said nanotube filler comprising at least one nanotube material, and said ceramic matrix comprising a nanocrystalline ceramic oxide.
A method for producing ceramic articles having improved fracture toughness comprising:
- combining a nanotube filler comprising at least one nanotube material and a ceramic matrix comprising at least one nanocrystalline ceramic oxide;
- forming an article therefrom;
- and
- sintering the article under elevated pressure at elevated temperature.
A ceramic matrix nanocomposite comprising:
- a nanotube filler comprising at least one nanotube material;
- and
- a ceramic matrix comprising a nanocrystalline ceramic material, with the proviso that where the nanotube filler is a carbon nanotube material, the nanocrystalline ceramic material may not be silicon carbide.
A ceramic matrix nanocomposite comprising:
- about 1 to 20 parts by volume of a multi-walled carbon nanotube material;
- and
- about 80 to 99 parts by volume of a nanocrystalline alumina.
Dependencies are inferred from the claim text.