Abstract
In the present work, the synergistic corrosion inhibition effects between sodium fluoride (NaF) and DL-malic acid (DMA) on Mg-Al-Mn magnesium alloy in the pH neutral NaCl solution were studied through a visual identification based high-throughput screening method and a series of characterization techniques. The highest inhibition efficiency (94.1%) and synergistic factor (3.8) were achieved when an equal amount (0.05 M) of components was mixed. This excellent anti-corrosion performance was achieved by the formation of a particle-refined perovskite (NaMgF3) film on the alloy surface resulting from the incorporation of DMA in the nucleation and growth of NaMgF3.
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