Singhal, Sunil K. and Srivastava, Avanish K. and Pasricha, Renu and Mathur, Rakesh B. (2011) Fabrication of Al-Matrix Composites Reinforced with Amino Functionalized Boron Nitride Nanotubes. Journal of Nanoscience and Nanotechnology, 11 (6). pp. 5179-518. ISSN 1533-4880

PDF - Published Version Restricted to Registered users only Download (5Mb) | Request a copy

Abstract

Amino functionalized boron nitride nanotubes were used as the reinforcement material for the fabrication of Al-matrix composites using powder metallurgy process. It was found that the mechanical properties of these composites were improved significantly as compared to pure Al composites fabricated under similar conditions. The microhardness of these composites was found to improve by five times and compressive strength by 300% as compared to pure Al composites under similar processing conditions. The enhanced mechanical properties of these composites can be attributed to the proper dispersion of boron nitride nanotubes (BNNTs) in Al matrix and the formation of a strong interfacial bonding between BNNTs and Al matrix under the processing conditions. High-resolution transmission electron microscopy studies revealed the formation of transition layer of AlB2 which might lead to a better load transfer from Al matrix to the BNNTs. Further, these composites are believed to withstand high temperatures as compared to Al matrix composites reinforced with carbon nanotubes and, therefore, can be used for applications where lightweight and high strength materials are desired with stability at elevated temperatures.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s American Scientific Publishers.
Uncontrolled Keywords:	Boron Nitride Nanotubes; Amino Functionalization; Ball Milling; Composites; Microstructure
Subjects:	Chemistry Materials Science Applied Physics/Condensed Matter Nanoscience/ Nanotechnology
Divisions:	UNSPECIFIED
Depositing User:	Mr. Abhishek Yadav
Date Deposited:	18 Dec 2012 07:26
Last Modified:	18 Dec 2012 07:26
URI:	http://npl.csircentral.net/id/eprint/899

Actions (login required)

View Item