It can be seen from Fig. 9a that th

It can be seen from Fig. 9a that the hardness of the Mg alloys wasincreased with increasing alloying content, from ∼50 HV1 for the extruded Mg-1Zn alloy to ∼83 HV1 for the extruded Mg-1Zn-0.5Ge alloy.Fig. 8. (a) Current density iMg2+ determined by online ICP-OES analysis duringthe open circuit potential (OCP) and potentiodynamic polarisation (PDP) exposure for pure Mg and the Mg extrusion alloys produced herein in 0.1 M NaCl.Legend provides nominal alloy compositions in wt. %. (b) Potentiodynamicpolarisation data presented in the format of applied potential vs. current densityiMg2+ for pure Mg and the Mg alloys produced herein.