1Department of Chemistry, Jamal Mohammad College Tiruchrapalli India
2Department of Chemistry, Auden Technology and Management Academy Bangalore India
3Department of Chemistry, East West Institute of Technology , Bangalore India
This paper deals with the corrosion characterization of Al6061- red mud particulate metal matrix composites (MMCs). Al6061 alloy is used as matrix. Commercially available alloy is used. Red mud is the wastage obtained after the removal of aluminium from its ore and contains silica, alumina, titanium dioxide and ferric oxide. Being a ceramic material red mud remains inert and is hardly affected by the corrosion medium. Red mud particles of size 50-80 microns are used as reinforcement. Experiments were conducted to determine the corrosion rate of the samples in sea water procured from Arabian Sea in malpe, Udupi District, Karnataka. MMC's are prepared according to ASTM standards by liquid melt metallurgy technique using vortex method. Composites containing 2, 4, 6% by weight of Red mud and unreinforced matrix were tested using Arabian sea water at room temperature. Specimens are taken in the form of 20mm x 20mm cylinders. They were exposed to sea water for different intervals of time. Corrosion rates of all samples were calculated using the formula 534W/DAT mpy. The results were computerised and simulation curves were obtained. The composite was found to be more corrosive resistant than matrix alloy. In each test the corrosion resistance of both alloy composites was found to decrease with the exposure time. The decrease in the corrosion rates of composites when compared to that of matrix alloy is due to the physical barrier created by Red mud particles.
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Abdul Jameel1, P. V Krupakara2 and H. P. Nagaswarupa3 , "Weight loss corrosion studies of Al6061 / red mud metal matrix composites in sea water ", Journal of Ultra Chemistry, Volume 7, Issue 2, Page Number 219-224, 2016Copy the following to cite this URL:
Abdul Jameel1, P. V Krupakara2 and H. P. Nagaswarupa3 , "Weight loss corrosion studies of Al6061 / red mud metal matrix composites in sea water ", Journal of Ultra Chemistry, Volume 7, Issue 2, Page Number 219-224, 2016Available from: http://www.journalofchemistry.org/paper/489/