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The effect of nano-copper additives on the porosity, mechanical properties, and microstructure of alumina ceramics using commercial rice husk ash as a pore former


Citation

Ali, Mohammed Sabah and Mohamed Ariff, Azmah Hanim and S.M, Tahir and Jaafar, Che Nor Aiza and Mazlan, Norkhairunnisa and Matori, Khamirul Amin (2017) The effect of nano-copper additives on the porosity, mechanical properties, and microstructure of alumina ceramics using commercial rice husk ash as a pore former. Journal of the Australian Ceramic Society, 53 (2). 963 - 974. ISSN 2510-1560; ESSN: 2510-1579

Abstract / Synopsis

The aim of the present research is to examine the effect of Cu metal addition in nano-scale particle size on the mechanical properties and porosity of porous alumina ceramics using commercial rice husk ash as pore forming agent and silica (SiO2) source. Porous alumina ceramics reinforced were prepared using nano-scale Cu metal particles as their strengthening phase. Solid-state and sacrificial techniques were used to prepare the porous alumina reinforced ceramics. A field emission scanning electron microscope (FESEM), X-ray diffraction (XRD), and transmission and electron microscope (TEM) were used to analyze the microstructure and ceramic phases. Different ratios of Cu metal were added (3, 6, 9, and 12 wt%) at different ratios of commercial rice husk ash. The results of this investigation show that with increasing ratios of Cu metal, the porosity decreased and the mechanical properties increased. The increase in the mechanical properties could be attributed to the decrease in the porosity, the toughening mechanism, increase density of porous alumina ceramics, and formation of the tenorite (CuO) phase due to sintering at high temperature (1600 °C). Some potential applications include purging of gas filtration and thermal insulation.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Faculty of Science
DOI Number: https://doi.org/10.1007/s41779-017-0112-0
Publisher: Springer Singapore
Keywords: Nano-copper; Rice husk ash; Porosity; Mechanical properties; Porous ceramics
Depositing User: Mas Norain Hashim
Date Deposited: 27 Aug 2018 12:13
Last Modified: 27 Aug 2018 12:13
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1007/s41779-017-0112-0
URI: http://psasir.upm.edu.my/id/eprint/63432
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