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Journal of Materials Engineering and Performance
Erschienen in: Journal of Materials Engineering and Performance 6/2015

01.06.2015

Ultrasonic-Assisted Synthesis of Graphite-Reinforced Al Matrix Nanocomposites

verfasst von: P. Christy Roshini, B. Nagasivamuni, Baldev Raj, K. R. Ravi

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 6/2015

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Abstract

A novel approach to produce Al-2 vol.% graphite nanocomposites using micron-sized graphite particles has been reported using conventional stir casting technique combined with ultrasonic treatment. Microstructural observations indicate that the visible agglomerations and porosities are significantly reduced after ultrasonic treatment. Transmission electron microscopy studies of ultrasonic-treated composites reveal that the size of the graphite particles is reduced substantially and its morphology is transformed into flake type structures. The width of the graphite flakes is reduced markedly with the increase in ultrasonic processing time and it is found to be in the range of 100-120 nm with an aspect ratio of 8.83 after 5 min of ultrasonication. Added to that, considerable improvement in the hardness values are noted for ultrasonic-treated Al-2 vol.% graphite composites when compared to conventional untreated composites. The mechanism behind the significant reduction in graphite particle size and porosity, uniform distribution of graphite particles and hardness increments are discussed.
Vorheriger Artikel Experimental and Numerical Analysis of the 6061-Based Nanocomposites Fabricated via Ultrasonic Processing
Nächster Artikel Some Perspectives on Innovative Processing and Materials Development

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Metadaten
Titel
Ultrasonic-Assisted Synthesis of Graphite-Reinforced Al Matrix Nanocomposites
verfasst von
P. Christy Roshini
B. Nagasivamuni
Baldev Raj
K. R. Ravi
Publikationsdatum
01.06.2015
Verlag
Springer US
Erschienen in
Journal of Materials Engineering and Performance / Ausgabe 6/2015
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI
https://doi.org/10.1007/s11665-015-1491-4

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