Sealing of PEO Coated AZ91 Magnesium Alloy Using La-Based Solutions

Figure 11

X-ray diffraction patterns for the sample of AZ91 magnesium alloy treated with PEO process at 0.5 A/cm² for 2 minutes, in an aqueous alkaline solution with 50 g/l of Na₂SiO₃, 40 g/l of NaOH, and 50 g/l of Na₅P₃O₁₀.