Journal of Chemistry

Electrochemical studies of Al 7075/zircon metal matrix composites in natural sea water

Author:
H.P.NAGASWARUPA1*, H. G. BHEEMANNA2 and G. BANU PRAKASH3
Affiliation:

1*Department of Chemistry , East West Institute of Technology Bangalore India

2Department of Chemistry , Vivekanand Institute of Technology Bangalore India

3Research Scholar Department of Chemistry , Dravidian University Kuppam AP India and SJB Institute of Technology Bangalore India

 

 

 

Keyword:
Issue Date:
December 2012
Abstract:

Metal matrix composites (MMCs) are engineering combinations of two or more materials of which the base material being a metal or its alloy, where tailored properties are achieved by systematic combination of different constituents. These are heterogeneous materials consisting of two or more phases which are in intimate contact with each other on
a microscopic scale. These composite materials can be made by the dispersion of fibers, whiskers or particles as dispersoids in a metal matrix and exhibit combinations of properties which are difficult to achieve in monolithic materials. Out of the different forms of composite materials, particle reinforced composites are promising because of their isotropic properties and low cost. New aluminium based composites have been developed and they are being viewed as potential industrial products particularly in defense and automotive sectors. In particulate reinforced
composites, investigations have been carried out with less expensive dispersoids to attain desirable thermal, mechanical and corrosion resistance properties to suit various applications, where cost effectiveness along with performance matters. These materials have a lot of potential to be used in marine, mining and mineral processing
industries also, on account of their excellent characteristics like thermal conductivity, wear resistance and corrosion resistance. In order to use these materials in such industries, they are required to withstand high corrosive environments. Thus, there is a need to study the corrosion behaviors of AMCs reinforced with ceramic dispersoids. In order to extend the use of AMCs into other industries, it is also essential to investigate their corrosion behavior in different environments like acidic, basic, neutral and marine conditions.The present work has been carried out to evaluate the corrosion behavior of AMCs reinforced with ceramic dispersoids in various environments, since not much research work has been done on AMCs; the present work was taken up. Stress corrosion studies were conducted by using natural sea water as a corrodent. Both composites and corresponding base alloys were subjected to identical test conditions to understand the influence of the reinforcement on alloy, corrosion behavior and effective corrosion control. Composites became less prone to corrosion and pit formation than that of matrix alloy, which may be due to inert zircon particles present in the metal matrix composites. Corrosion of alloys can be effectively controlled by converting them in to composites by the addition of inert materials like zircon particulates.

Pages:
319-328
ISSN:
2319-8036 (Online) - 0973-3450 (Print)
Source:
DOI:
juc

Copy the following to cite this article:

H.P.NAGASWARUPA1*, H. G. BHEEMANNA2 and G. BANU PRAKASH3, "Electrochemical studies of Al 7075/zircon metal matrix composites in natural sea water", Journal of Ultra Chemistry, Volume 8, Issue 3, Page Number 319-328, 2016

Copy the following to cite this URL:

H.P.NAGASWARUPA1*, H. G. BHEEMANNA2 and G. BANU PRAKASH3, "Electrochemical studies of Al 7075/zircon metal matrix composites in natural sea water", Journal of Ultra Chemistry, Volume 8, Issue 3, Page Number 319-328, 2016

Available from: http://www.journalofchemistry.org/paper/425/

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