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Fabrication of aluminum matrix composites reinforced with Al2ZrO5 nano particulates synthesized by sol-gel auto-combustion method


Citation

Shameli, Kamyar and Ahmad @ Ayob, Mansor and Khorramie, Saeid Abedini and Baghchesara, Mohammad Amin and Lotfi, Roshanak and Shabanzadeh, Parvaneh (2013) Fabrication of aluminum matrix composites reinforced with Al2ZrO5 nano particulates synthesized by sol-gel auto-combustion method. Chalcogenide Letters, 10 (8). pp. 293-302. ISSN 1584-8663

Abstract

Nanocrystalline Al2ZrO5 with particle size of about 38 nm was directly synthesized by combination of sol−gel auto-combustion and ultrasonic irradiation techniques from metal nitrates and glycine as precursors. The overall process involves formation of homogeneous sol, formation of dried gel and combustion process of the dried gel. Aluminum alloy matrix composites reinforced with 0.75%, 1.5% and 2.5% Al2ZrO5 nanoparticles were fabricated via stir casting method and the fabrication was performed at various casting temperatures. The resulting composites were tested for their nanostructure and present phases by SEM and XRD analysis. Optimum amount of reinforcement and casting temperature were determined by evaluating the density, hardness and compression strength of the composites. Al matrix alloy reinforced by Al2ZrO5 nanoparticles improves the hardness and compressive strength of the alloy to maximum values of BHN 61 and 900 MPa, respectively. The most improved mechanical properties are obtained with the specimen including 1.5% Al2ZrO5 produced at 850 °C.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Publisher: National Institute of Materials Physics, National Institute of Optoelectronics
Keywords: MMCs; Al2ZrO5; Nanostructure; Auto-combustion; Ultrasonic; Stir casting; Mechanical.
Depositing User: Umikalthom Abdullah
Date Deposited: 01 Jul 2014 02:07
Last Modified: 03 Feb 2016 06:50
URI: http://psasir.upm.edu.my/id/eprint/30110
Statistic Details: View Download Statistic

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