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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
The Nyquist plots of Zn-Mn-Mg alloys and fabricated by the MAO with different NaF concentrations from 0.5 g/L to 2.5 g/L in Hank’s solution at 37 °C: (a) Low magnification; (b) high magnification.