Studies on Corrosion of Mg-Al-Zn Alloy in 30% Aqueous Ethylene Glycol

Harishbhat Medhashree; A.Nityananda Shetty

doi:10.4028/www.scientific.net/MSF.830-831.679

Paper Titles

Low Temperature Boronizing of Surface Nanostructured Ni-Cr-Mo Steel Using SMAT
p.663

Microstructural and Mechanical Characterization of Alumina Coating on 07X16H6M Substrate
p.667

Optimization and Characterization of Manganese Coating on Cu-Cr-Zr-Ti Alloy
p.671

Plasma Ion Nitriding of Low Carbon Stainless Maraging Steel
p.675

Studies on Corrosion of Mg-Al-Zn Alloy in 30% Aqueous Ethylene Glycol
p.679

Synthesis and Characterization of Silicide Coating on Niobium Alloy Produced Using Molten Salt Method
p.683

Ultrasonic-Assisted Electroless Coating of Ni-B Alloy and Composites on Aluminum Alloy Substrates
p.687

Microstructure and Nanomechanical Behaviour of Electron Beam Evaporated Yttria Stabilized Zirconia Films on Ni Base Superalloy
p.691

Hot Corrosion Stability of Double Perovskite and Pyrochlore in Suphate Solution of Vanadates or Chlorides at 900 °C
p.695

HomeMaterials Science ForumMaterials Science Forum Vols. 830-831Studies on Corrosion of Mg-Al-Zn Alloy in 30%...

Studies on Corrosion of Mg-Al-Zn Alloy in 30% Aqueous Ethylene Glycol

Abstract:

The Mg-Al-Zn alloy is used in the coolant systems of automobile engines. Corrosion of Mg-Al-Zn engine components by coolants, which consist of 30% aqueous ethylene glycol as a coolant composition, is an important issue in automobile industries. With this preview, in the present study it is intended to study the effect of environmental contaminant sulphate ions on the corrosion behavior of Mg-Al-Zn alloy in 30% (v/v) aqueous ethylene glycol solution. Electrochemical investigations were carried out by potentiodynamic polarization and electrochemical impedance spectroscopy techniques. Scanning electron microscopy (SEM) and energy dispersion X-ray analysis (EDX) were used to study the surface morphology and composition of the alloy. Activation parameters for the corrosion process were calculated by conducting the corrosion studies at different temperatures. It was observed that corrosion rate of the alloy in 30% (v/v) aqueous ethylene glycol increases with the increase in the concentration of sulphate ions and also with the increase in temperature.

You might also be interested in these eBooks

Advanced Materials and Manufacturing Processes for Strategic Sectors

View Preview

Info:

Periodical:

Materials Science Forum (Volumes 830-831)

Pages:

679-682

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.830-831.679

Citation:

Cite this paper

Online since:

September 2015

Authors:

Harishbhat Medhashree, A.Nityananda Shetty

Keywords:

EDX, EIS, Ethylene Glycol, Mg-Al-Zn Alloy, SEM, Sulphate Ions

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] G.L. Song, Corrosion of magnesium alloys, First ed., Woodhead Publishing Limited, UK, (2011).

Google Scholar

[2] G.L. Song, A. Atrens, Corrosion mechanism of magnesium alloys, Adv. Eng. Mater. 1 (1999) 11-33.

Google Scholar

[3] G.L. Song, Recent progress in corrosion and protection of magnesium alloys, Adv. Eng. Mater. 7 (2005) 563-586.

DOI: 10.1002/adem.200500013

Google Scholar

[4] D. Nandini, A. Nityananda Shetty, Alkyl carboxylates as efficient and green inhibitors of magnesium alloy ZE41 corrosion in aqueous salt solution, Corros. Sci. 85 (2014) 411-427.

DOI: 10.1016/j.corsci.2014.04.052

Google Scholar