Title :
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
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;
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
DOI :
10.1109/NEMS.2008.4484450