Resistance of cast AZ91 magnesium alloy to electrochemical corrosion

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Katarzyna Łyczkowska


The article presents the results of AZ91 cast magnesium alloy resistance to electrochemical corrosion. The basic material and welding joints obtained by TIG method (141) were evaluated. The mass loss and corrosion time at specific concentrations of the H2SO4 acid solution were assumed as a criterion of resistance to electrochemical corrosion. It was found that an increase in the acid solution concentration significantly affects the rate of corrosion of alloy, thus causing a greater degradation of its surface and a higher mass loss. It was also noticed that the corrosion rate decreases when the experiment time is extended. After 72 h, this speed drops below 0.1 g/(cm2•day), which is caused by the inhibition of the corrosion as a result of the neutralization of the acid solution.


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K. Łyczkowska, “Resistance of cast AZ91 magnesium alloy to electrochemical corrosion”, Weld. Tech. Rev., vol. 90, no. 7, Jul. 2018.
Original Articles


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