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

Hui Pan, Liwei Wang, Yi Lin, Feng Ge, Kang Zhao, Xin Wang, Zhongyu Cui

Table 4 Corrosion parameters of AZ31 magnesium alloys in different solutions derived from the polarization curves.

Solutions	E_corr (V_SCE)	b_c (V dec^-1)	i_corr (mA cm-2)	P_i (mm a^-1)
(NH₄)₂SO₄ (pH5.96)	-1.559	-0.389	0.149	3.41
Na₂SO₄ (pH6.48)	-1.562	-0.280	0.039	0.895
Na₂SO₄ (pH5.96)	-1.562	-0.290	0.052	1.189