Corrosion behavior of Mg–2.4Zn alloy micro-alloyed with Ag and Ca

Deposition of duplex MAO layer/nanostructured titanium dioxide composite coatings on Mg–1%Ca alloy using a combined technique of air plasma spraying and micro arc oxidation

“…This can be attributed to the protective performance of the coatings [60]. However, the bare Mg alloy presented small phase angle and the aperture of the phase angle decreased, due to the surface film cannot protect the substrate effectively [60]. These results showed that composite coating (as a strong barrier layer) can protect the Mge1%Ca alloy substrate against aggressive solution.…”

“…12b), it can be seen that the aperture of the phase angle increased after applying the coatings on the Mg alloy substrate. This can be attributed to the protective performance of the coatings [60]. However, the bare Mg alloy presented small phase angle and the aperture of the phase angle decreased, due to the surface film cannot protect the substrate effectively [60].…”

The Effect of Rod-Shaped Long-Period Stacking Ordered Phases Evolution on Corrosion Behavior of Mg95.33Zn2Y2.67 Alloy

“…The weakened anode reaction is attributed to the more uniform distribution of LPSO phases. It is well known that the uniform distribution of second phases could increase the randomness of galvanic corrosion, and make the corrosion occur uniformly, then decrease the anodic current density [25,26]. Compared with the extruded alloy, the anode current density of the post-extrusion heat-treated alloy is not changed, but the cathode current density is decreased.…”

“…Generally, the higher impedance value means the lower the corrosion rate. It was widely accepted that the arc of the intermediate frequency was related to the protective properties of the oxide film formed on the surface of the alloy [25,26,27]. The larger the aperture of the arc, the better the protective performance of the oxide film was, and the more it could inhibit the corrosion reaction.…”

Mechanical properties and corrosion behaviours of the as-cast ZK40 alloys modified with individual additions of CaO, Gd, Nd and Y

“…The corrosion behaviour of Mg-Zn-Ca was investigated as well [68][69][70]. Rad et al [68] showed that the addition of Zn for the Mg-Ca-Zn system alloys improved corrosion resistance and Lu et al [71] showed that galvanic corrosion seems to play an important role on the corrosion resistance of Mg-3Zn-0.3Ca alloys.…”