EVALUATION OF CORROSION BEHAVIOUR OF ALUMINIUM 6061- CENOSPHERE COMPOSITES
Keywords:
Aluminium 6061 composites, fly ash cenospheres, corrosion resistance, immersion corrosion.Abstract
One of the alarming environmental problems that require an immediate solution is associated with an infinitely increasing amount of ash produced during the burning of coal, oil, wood and other biomaterials. Among these, fly ash cenosphere utilization continues to be an important area of national concern due to India’s dependence on thermal power generation for its energy supply. Alloy 6061 is one of the most widely used alloys in the 6000 series. This standard structural alloy, one of the most versatile of the heat-treatable alloys, is popular for medium to high strength requirements and has good toughness characteristics. Alloy 6061 has excellent corrosion resistance to atmospheric conditions and good corrosion resistance to seawater. This paper deals with the manufacture of cenosphere aluminium composites with varied proportions of the reinforcement phase, fly ash cenospheres – 6061 aluminium composite with features in terms of corrosion resistance have been developed. Immersion corrosion studies have been carried out with a thorough correlation between the corroded surfaces and the results indicated. The corrosion studies show that there is an increase in the corrosion pitting of the cenosphere aluminium composite.
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References
VeereshKumar G B, Rao, Selvaraj N and Bhagyashekar M S (2007), “Studies on Al6061-SiC and Al7075-Al2O3 Metal Matrix Composites”, Journal of Minerals and Materials.Characterization, Vol.9(1), 43-55.
"ASM Handbook of composites”, Vol.21.
Suresh N, Venkateswaran S and Seetharamu S (2010), “Influence of cenospheres of fly ash on the mechanical properties and wear of permanent moulded eutectic Al–Si alloys”, Mater. Sci.- Poland, Vol 28(1).
Metzoer M and Fishman S G (1983), “Ind. Engg. – Chem. Prod. Res. Dev.”, Vol.22, 296.
Nunes and Ramanathan L V (1995), “Corrosion Behaviour of Alumina- Aluminium and SiC-Aluminium Metal Matrix Composites”, Corrosion, 610-617.
Paciej and Agarwala (1998), “Influence of processing variables on the corrosion susceptibility of metal-matrix composites”, Corrosion, Vol.44(10), 680.
Zhu and Hihara (2010), “Corrosion of continuous alumina-fibre reinforced Al–2 wt.% Cu–T6 metal–matrix composite in 3.15 wt.% NaCl solution”, Corrosion Science, Vol.52, 406–415.
Neil C and Garrard (1994), “The Corrosion Behaviour of Al- SiC Composites in Aerated 3.5% Sodium Chloride”, J. Corrosion Sci., Vol.36(5), 837 – 851.
Warrier and Lim (1993), “Silver coating on carbon and silicon carbide fibres”, Journal of Material Science, Vol.28, 4868- 4877.
Abrar Ahamed and Prashanth (2016), “Corrosion behaviour of Cenosphere Aluminium 6061 Composites”, Advanced Materials Manufacturing and characterization, Vol.6(2).
Bienias, Walezake B Surowska and Sobczak J (2003), “Microstructure and corrosion behavior of aluminum fly ash composites”, Optoelectronics and Advanced Materials, Vol.5(2), 493–502.
Das S, Mondal, Jha and Modi (2000), “Aluminium metal matrix composite: Present status and future prospects”, Proceeding of the third International Conference on Advances in composites, 702-709.
Mondal, Saraswathi S and Das (2000), “Effect of particle reinforcement on the corrosion behavior of an Al-Si alloy- comparison with cast iron”, Proceeding of the third International Conference on Advances in composites, Bangalore, 530- 527.
Trzaskoma, Mc Cafferty and Crowe (1983), “Corrosion behaviour of SiC/Al metal matrix composites, Electrochemical Society, Vol.130(3), 1804-1809.
Buarzaiga and Thorpe S J (1994), “Corrosion behavior of as- cast, silicon carbide particulate aluminium alloy metal matrix composites”, Corrosion Science, Vol.50(3), 176-185.
Bhat, Surappa and Naik (1991), “Corrosion behaviour of SiC particle reinforced 6061/Al alloy composites”, Journal of Material Science, Vol. 26(18), 49-91.
