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Using Electrochemical Noise Technique to Evaluate the Corrosion Performance of a Reinforcement Magnesium Alloy

Gobara M.

International Letters of Chemistry, Physics and Astronomy

2015

Vol. 40

61--72

AZ91D magnesium alloy was reinforced by titanium and boron carbides under an inert environment using in-situ reactive infiltration technique. The corrosion properties of the reinforced magnesium alloy were investigated using Electrochemical noise (EN) techniques in dilute Harrison solutions. The moving average removal (MAR) method was used as trend removal methods. The frequency of pitting events (ƒn) and the average charge in each pitting events (q) were calculated for each EN measurements. EN results shows that the addition of reinforcement improved the corrosion resistance of the magnesium alloy (R-Mg) and no signs of corrosion were observed during 10 days of immersion in the corrosive solution.