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Corrosion Studies of Aluminium 6061 / Beryl Particulate Composites in Mixture of Sodium Hydroxide and Sodium Chloride Solutions


Author(s):

K. Krishnaveni , DONBOSCO INSTITUTE OF TECHNOLOGY, BANGALORE; H. R. Radha, T.JOHN INSTITUTE OF TECHNOLOGY,BANGALORE; P V Krupakara, ADARSHA INSTITUTE OF TECHNOLOGY

Keywords:

Beryl particulates, Corrosion loss, Metal Matrix Composite (MMCs), Weight loss

Abstract:

The aim of the research work was to investigate the corrosion behaviour of beryl particulate reinforced aluminium 6061 metal matrix composites (MMCs) in a mixture of alkaline and salt solution using weight loss method. The mixture alkali and salt solution used is mixture of sodium hydroxide and sodium chloride solutions. The composites are manufactured by liquid metallurgy technique using vortex method. Aluminium 6061 / beryl particulates MMCs containing 2, 4 and 6 weight percentage of beryl particulates are casted. The corrosion characteristics of Aluminium 6061 / beryl particulate composite and the unreinforced alloy were experimentally assessed. The corrosion test was carried out at different concentrations of mixture of sodium hydroxide and sodium chloride solution at a concentration of 0.025M, 0.05M and 0.1 M solutions for different exposure time. The results indicated that corrosion rate of metal matrix composites was lower than that of matrix material Aluminium 6061 under the corrosive atmosphere irrespective of exposure time and concentration of corrodent. Aluminium 6061 /beryl particulates composite become more corrosion resistant as the beryl content is increased. This is because of the formation of stable layer over the specimens. Scanning Electron Microscopy (SEM) show the degree of attack of alkaline solution on the surface of the investigated material.


Other Details:

Manuscript Id :IJSTEV6I4008
Published in :Volume : 6, Issue : 4
Publication Date: 01/11/2019
Page(s): 13-16
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