Mechanistic study of ammonium-induced corrosion of AZ31 magnesium alloy in sulfate solution

Hui Pan^b, Liwei Wang^a, Yi Lin^b, Feng Ge^b, Kang Zhao^a, Xin Wang^b, Zhongyu Cui^b^,^*(

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Fig. 7.. Changes of OCPs (a) and pH values (b) of AZ31 magnesium alloy in NH₄⁺ solutions and the corresponding E-pH diagram (c), as well as the overlaid E-pH diagram of the N-H₂O and Mg-H₂O system (d).