The resistivity of a new composite system: CNT-ceramic

Author

Wang, Jing ; Guo, Jiahu ; Zhang, Yafei ; Pan, Yubai ; Guo, Jingkun

Author_Institution

Dept. of Mater. Sci. & Eng., Anhui Univ. of Sci. & Technol., Anhui

fYear

2008

fDate

6-9 Jan. 2008

Firstpage

820

Lastpage

823

Abstract

We present the first electrical resistivity property of a new composite system: CNT-ceramic composites. Carbon nanotube-mullite composites (CNT/mullite = 1~15 vol. %) were prepared by hot-pressing the corresponding composite powders. The electrical resistivity of the composites was decreased remarkbly by adding a very small amount of CNT in relation to the unique specialities of the carbon nanotubes. With the introduction of 10 vol. % pretreated CNT, the electrical resistivity is decreased by 9 orders of magnitude. The surface functionalised CNT are crucial for this significant decrease in electrical resistivity, which provides strong adhesion between the nanotubes and the matrix to give a homogeneous carbon nanotube-ceramic composite.

Keywords

alumina; carbon nanotubes; ceramics; composite materials; electrical resistivity; hot pressing; silicon compounds; C-Al₂O₃-SiO₂; adhesion; carbon nanotube-mullite composites; composite powders; electrical resistivity; homogeneous carbon nanotube-ceramic composite; hot-pressing; new composite system; Carbon nanotubes; Ceramics; Composite materials; Electric resistance; Interconnected systems; Materials science and technology; Mechanical factors; Organic materials; Polymers; Thermal conductivity; CNT; ceramic; composites; electrical resistivity; resistivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Nano/Micro Engineered and Molecular Systems, 2008. NEMS 2008. 3rd IEEE International Conference on

Conference_Location

Sanya

Print_ISBN

978-1-4244-1907-4

Electronic_ISBN

978-1-4244-1908-1

Type

conf

DOI

10.1109/NEMS.2008.4484450

Filename

4484450