Please use this identifier to cite or link to this item:
|Title:||Effect of chloride ions on passivity of Mg based materials|
Mg based composites
|Citation:||Budruk, A.S., Balasubramaniam, R., Gupta, M. (2008-06). Effect of chloride ions on passivity of Mg based materials. Corrosion Engineering Science and Technology 43 (2) : 179-185. ScholarBank@NUS Repository. https://doi.org/10.1179/174327807X234660|
|Abstract:||The effect of chloride ions on passivation of pure Mg, Mg-0·6 vol.-%Mo composite, Mg-0·6 vol.-%Cu composite and Mg alloy AZ91D has been studied in 0·1M NaOH solution by cyclic polarisation and electrochemical impedance spectroscopy (EIS). An addition of even 0·05M of chloride ions was sufficient to cause breakdown of passivity. Cyclic polarisation curves revealed a positive hysteresis loop in the presence of chloride ions. Breakdown potentials decreased continuously, for all materials, with increasing addition of chloride. Electrochemical impedance spectroscopy studies revealed that the film resistance of all Mg based materials continuously decreased with the addition of chloride ions. The film resistance of Mg-0·6%Cu and Mg-0·6%Mo composites was lower than that of pure Mg and AZ91D. Mg-0·6%Mo composite showed the lowest film resistance in all the solutions. The increase in film capacitance, for pure Mg and Mg based composites, with the addition of chloride ions, was attributed to surface roughening. Mo reinforcements were more detrimental than copper reinforcements. © 2008 Institute of Materials, Minerals and Mining.|
|Source Title:||Corrosion Engineering Science and Technology|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jan 17, 2019
WEB OF SCIENCETM
checked on Jan 9, 2019
checked on Dec 29, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.