Corrosion Behaviour of MLA Alloy by Potentiodynamic Polarization studies

Magnesium and its alloy have been increasingly used in many areas such as in automobiles,steel industries cathodic protection and in specialized battery systems.Recently many alloys with specified properties have been prepared for structural application also.These alloys have licurative properties such as high strength to weight ratio,better corrosion resistance, and better formability and cast ability.Lack of understanding about the corrosion behaviour of magnesium alloys prevented the application of such alloys in a scale as expected from their availability,hence this program has been under taken to show the interesting properties of the MLA alloy as well as the advantages and corrosion behaviour of these alloys.It has also been aimed at to popularized the use of these alloy in many aqueous environments. Basic understanding of the corrosion behaviour can only be obtained by carrying of polarization studies. potentiodynamic method is one of the convenient techniques to collect corrosion data,By assessing the nature and extend of corrosion of these alloys appropriate protective methods can be devised. During this program Mg-11Li-1.5Al,alloys has been investigated by potentiodynamic polarization technique in NaCl,Na2SO4 NH4Cl,MgCl2 at concentration range from 0.05 to 2M.Studied Open circuit potential and calculated corrosion current.