Carbon nanotube composite material comprising a continuous metal coating in the inner surface, magnetic material and production thereof
US7335408B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 22, 2004 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | Sep 22, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2991
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
A carbon nanotube composite material contains a carbon nanotube and a continuous layer of a metal covering the inner surface of the carbon nanotube. It is produced by forming a metallic matrix layer and treating the metallic matrix layer to form plural nanoholes in the metallic matrix layer to thereby form a nanohole structure, the nanoholes extending in a direction substantially perpendicular to the plane of the metallic matrix layer; forming carbon nanotubes inside the nanoholes; and covering inner surfaces of the carbon nanotubes with a continuous layer of a metal. It has a well controlled small size, has excellent and uniform physical properties, is resistant to oxidation of the metal with time, is highly chemically stable, has good durability enabling repetitive use, has good coatability, high wettability and dispersibility with other materials, is easily chemically modified, is easily handled and is useful in various fields.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.