Fig. 2: The morphology of Mg(OH)2 at the interface of Mg.
From: High rate oxygen reduction reaction during corrosion of ultra-high-purity magnesium

a CP-Mg, b UHP-Mg. The cross-section STEM bright-field/dark-field images and EDX elemental distribution of each sample after 30 min of immersion in air saturated 0.05 M NaCl electrolyte.