Singhal, Sunil Kumar and Lal, Maneet and Sharma, Indu and Mathur, Rakesh Behari (2013) Fabrication of copper matrix composites reinforced with carbon nanotubes using a combination of molecular-level-mixing and high energy ball milling. Journal of Composite Materials, 47 (5). 613-621. ISSN 0021-9983

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Abstract

We report a two-step process for the fabrication of copper (Cu) matrix composites reinforced with carbon nanotubes (CNTs). In the first step, a homogeneous mixture of copper nanoparticles and CNTs was prepared using the molecular-level-mixing followed by ball milling the mixture using a high energy ball mill. CNTs/Cu composites were fabricated in the second step using the powder metallurgy process in which the composite powders were first cold pressed at 550 MPa and then sintered in the range of 550-900 degrees C for 2 h under a vacuum of 10(-2) Torr. Composites fabricated via this method showed significant improvement in mechanical properties over CNTs/Cu composites produced earlier either using only ball milling or molecular-level-mixing. Further, a high dispersion of CNTs in Cu matrix was observed in the present system as revealed by the microstructural analysis of CNTs/Cu composite powder using scanning electron microscopy and high resolution transmission electron microscopy.

Item Type:	Article
Additional Information:	copyright for this article belongs to M/s SAGE Publications
Subjects:	Materials Science
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	19 Aug 2026 10:06
Last Modified:	19 Aug 2026 10:06
URI:	https://npl.csircentral.net/id/eprint/3226

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