Int. J. of Nanomanufacturing   »   2014 Vol.10, No.5/6

 

 

Title: Achieving uniform nanoparticle distributions of bulk Al/Al2O3 metal matrix nanocomposites

 

Authors: Pragyan Mohanty; Kampal Mishra; Ranadhir Bosu; Payodhar Padhi

 

Addresses:
Department of Physics, Institute of Technical Education and Research (ITER), Siksha 'O' Anusandhan University, Khandagiri Square, Bhubaneswar 751 030, Odisha, India
Department of Physics, Institute of Technical Education and Research (ITER), Siksha 'O' Anusandhan University, Khandagiri Square, Bhubaneswar 751 030, Odisha, India
Central Research Facility, IIT – Kharagpur, Kharagpur 721302, West Bengal, India
Department of Mechanical Engineering, Konark Institute of Science and Technology (KIST), Khurda, Odisha, India

 

Abstract: In this paper, the advantage of the ultrasonic full cavitation technique has been considered for the synthesis of metal matrix nanocomposites. The transmission electron micrographs show the uniform dispersion of the nano-alumina particles throughout the aluminium matrix. The use of vibrator and ultrasonic waves for the synthesis of nanocomposites does not give time to agglomerate the nano-alumina particles. The hardness results obtained from the micro indentation and the Vickers hardness tester show the similar values of 107 HV with a variation of ±14 HV. The hardness value obtained for different locations of the nanocomposites is much higher than the pure Al and bulk Al/Al2O3 composites. This confirms that the dispersion of nanoparticles throughout the Al gives rise to uniform hardness in the nanocomposites which is the advantage of the synthesis process, i.e., ultrasonic full cavitation technique.

 

Keywords: metal matrix nanocomposites; nanoparticles; ultrasonic full cavitation; solidification; uniform nanoparticle distributions; nanocomposite synthesis; nanotechnology; aluminium matrix; hardness; microindentation.

 

DOI: 10.1504/IJNM.2014.066296

 

Int. J. of Nanomanufacturing, 2014 Vol.10, No.5/6, pp.478 - 488

 

Submission date: 30 Oct 2013
Date of acceptance: 30 Apr 2014
Available online: 11 Dec 2014

 

 

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