Title:
HIGHLY FUNCTIONAL COMPOSITE MATERIAL AND PROCESS FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2007/029588
Kind Code:
A1
Abstract:
[PROBLEMS] To provide a novel highly functional composite material that permits use
of inexpensive raw materials, exhibiting high toughness and low frictional coefficient
and that excels in abrasion resistance performance, exhibiting low electrical
resistance and excelling in electromagnetic wave absorption; and provide a
process for producing the same. [MEANS FOR SOLVING PROBLEMS] A highly functional
composite material constituted of a sintered material comprising 0.1 to 90 mass%
of carbon nanotubes (2) and 99.9 to 10 mass% of alumina-silica ceramic (3). The
alumina-silica ceramic (3) contains 99.5 to 5 mass% of alumina and 0.5 to 95 mass%
of silica. Nano-composite (1) composed of, intertwined together, nanocrystals
of alumina-silica ceramic (3) and carbon nanotubes (2) provides a constituent.
Raw material of alumina-silica ceramic (3) and carbon nanotubes (2) are placed
in a solvent, such as water or an alcohol, and in slurry form mixed together for
3 to 180 min. The solvent is removed from the mixed materials, and sintering thereof
is carried out in a nonoxidative atmosphere at temperature ranging from 800°
to 1800°C over a period of 5 min to 5 hr.
Inventors:
OMORI MAMORU (JP)
HASHIDA TOSHIYUKI (JP)
KIMURA HISAMICHI (JP)
OKUBO AKIRA (JP)
MURAKAMI YOSHIHIRO (JP)
ITO SHUN (JP)
INOUE AKIHISA (JP)
HASHIDA TOSHIYUKI (JP)
KIMURA HISAMICHI (JP)
OKUBO AKIRA (JP)
MURAKAMI YOSHIHIRO (JP)
ITO SHUN (JP)
INOUE AKIHISA (JP)
Application Number:
PCT/JP2006/317183
Publication Date:
March 15, 2007
Filing Date:
August 31, 2006
Export Citation:
Assignee:
UNIV TOHOKU NAT UNIV CORP (JP)
OMORI MAMORU (JP)
HASHIDA TOSHIYUKI (JP)
KIMURA HISAMICHI (JP)
OKUBO AKIRA (JP)
MURAKAMI YOSHIHIRO (JP)
ITO SHUN (JP)
INOE AKIHISA (JP)
OMORI MAMORU (JP)
HASHIDA TOSHIYUKI (JP)
KIMURA HISAMICHI (JP)
OKUBO AKIRA (JP)
MURAKAMI YOSHIHIRO (JP)
ITO SHUN (JP)
INOE AKIHISA (JP)
International Classes:
C04B35/10; B82B1/00; B82B3/00; C01B31/02; C04B35/18; C04B35/52; C04B35/622
Foreign References:
| JP2005154258A | 2005-06-16 | |||
| JP2005132654A | 2005-05-26 | |||
| JP2004244273A | 2004-09-02 |
Attorney, Agent or Firm:
SUDA, Atsushi et al. (Nishikicho 1-chome Aoba-k, Sendai-shi Miyagi 12, JP)
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