Corrosion effects of CNT-nanofluids on different metals

Ismail, A. F. and Anuar, A. and Rashmi, W. and Yusaf, T. (2014) Corrosion effects of CNT-nanofluids on different metals. In: 3rd International Conference on Advanced Materials and Information Technology Processing (AMITP 2013), 1-2 Dec 2013, Los Angeles, United States.

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Abstract

This study aims to determine the corrosion rates of three different metals (copper, stainless steel, and aluminium alloy) using CNT-nanofluids. Nanofluids have been extensively studied in enhancing heat transfer rates of conventional base fluids due to its efficiency and high thermal conductivity. Carbon nanotube (CNT) based nanofluids have demonstrated significantly higher thermal conductivity compared to nanofluids based on other nanoparticles. Though transport properties of CNT-nanofluids including their thermal conductivity, density, and viscosity have been investigated by large scientific community, there are only few studies carried out on its physical properties especially their reaction towards corrosion of different metals. Therefore, this study is carried out to compare the corrosion rates of three different metals using four different engine coolants with the variation of temperature from 27°C to 90°C. The coolants deployed in this work include ethylene glycol, water, and CNT-nanofluids with two different concentrations of 0.1 wt % and 0.02 wt % CNT. The CNTnanofluids are stabilized using the Gum Arabic (GA) as the dispersant. The results reveal that for each metal, the corrosion rates in water are the highest followed by ethylene glycol and CNT-nanofluids with 0.02 wt % and 0.1 wt %. Among the three metals, the highest rate of corrosion occurs to aluminium, followed by stainless steel and copper, for all coolants used in this experimental study. Finally, the rate of corrosion increases with the increase of temperature for all cases. © 2014 WIT Press.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version deposited in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 20 Jun 2017 02:09
Last Modified: 02 Nov 2017 04:50
Uncontrolled Keywords: CNT; corrosion; metals; nanofluids
Fields of Research : 09 Engineering > 0915 Interdisciplinary Engineering > 091505 Heat and Mass Transfer Operations
09 Engineering > 0915 Interdisciplinary Engineering > 091504 Fluidisation and Fluid Mechanics
10 Technology > 1007 Nanotechnology > 100704 Nanoelectromechanical Systems
Identification Number or DOI: 10.2495/AMITP20130171
URI: http://eprints.usq.edu.au/id/eprint/31257

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