Fig. 1: Measurement of electrochemical durability.
From: Corrosion resistant and high-strength dual-phase Mg-Li-Al-Zn alloy by friction stir processing

Electrochemical tests showing (a) open-circuit potential, (b) potentiodynamic polarisation curves, and (c) EIS Nyquist plots of as-rolled and as-FSP-samples after 1-h immersion in 0.1 M NaCl solution. d, e potentiodynamic polarisation and EIS results of FSP-aged samples (FSP and CO2 quenched followed by naturally-aged for 2 years) during immersion. f Comparison of mass-loss rate and corrosion current density of FSP-LAZ941 alloy with some typical Mg alloys11,24,25,26, including Mg–11Li–3Al alloy11, and corrosion-resistant Mg–Zn–Ge alloys24. Red dashed lines in (f) showing the mass-loss rate and corrosion current density of pure Mg25 as a benchmark.