Microstructure and electrochemical corrosion behavior of extruded Mg-Al-Pb-La alloy as anode for seawater-activated battery

533The anisotropy of corrosion resistance in the extruded Mg-Al-Pb-La alloy is associated with grain orientation. The longitudinal section along extrusion direction (ED) has a high proportion of low-energy (0001) planes and exhibits better corrosion resistance than the transversal section along radial direction (RD).