Singhal, S. K. and -, Mamta and Teotia, Satish and Chahal, Rajiv and Mathur, R. B. (2011) Use of AminoFunctionalized CNTs and CVD Grown CNTs for Better Dispersion in Al Powder in the Fabrication of Composites. In: International Conference on Advances in Condensed and Nano Materials (ICACNM) , FEB 23-26, 2011 , Punjab Univ, Dept Phys, Chandigarh, INDIA.

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Abstract

We report an improved process for the better dispersion of multiwalled carbon nanotubes (MWCNTs) in Al powder used for the fabrication of Al-matrix composites employing powder metallurgy process. For obtaining a better dispersion of MWCNTs in Al, we used two types of MWCNTs. In the first type, the MWCNTs were firstly functionalized by using ammonium bi-carbonate and mix with Al powder using a high energy ball mill in the presence of a process control agent. In the second type we grew MWCNTs directly on Al powder using CVD. Various mechanical properties of the composites including micro hardness, compressive strength etc. were determined. It has been observed that using functionalized MWCNTs (fCNTs) and CVD grown MWCNTs, these properties were found to enhance significantly. The dispersion of functionalized CNTs was studied by SEM and the interfacial bonding between functionalized CNTs and Al matrix using high resolution transmission electron microscopy (HRTEM).

Item Type:	Conference or Workshop Item (Paper)
Additional Information:	Copyright for this article belongs to M/s American Institute of Physics.
Uncontrolled Keywords:	Carbon Nanotubes; Metal Matrix Composites; Powder Metallurgy
Subjects:	Materials Science > Materials Science Nanoscience/ Nanotechnology Physics
Divisions:	UNSPECIFIED
Depositing User:	Mr. Abhishek Yadav
Date Deposited:	16 Oct 2012 09:24
Last Modified:	16 Oct 2012 09:24
URI:	http://npl.csircentral.net/id/eprint/696

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