Effects of Fe

Ni and Cu on corrosion resistance of AXJ530 magnesium alloy have been investigated by a 5% NaCl slat spray testing and a 5% NaCl salt water immersion testing as well as in an electrochemical method. The effects of Fe and Cu contents less than 6.9×10

-5 on the corrosion resistance of magnesium alloy can be almost ignored while the corrosion resistance of the magnesium alloy is greatly deteriorated wit Ni content more than 3×10

-6 in both 5% NaCl salt water immersion and the 5% NaCl salt spray environment. Fe or Cu addition can create some alveolate pit in specimen surface of the AXJ530 magnesium alloy and Ni addition can create corrosive pitting. Effects of Fe and Ni on corrosive current density in polarization curves are very similar to those of both in the 5% salt water immersion testing and in the 5% NaCl salt spray testing

however

the effect of Cu on corrosive current density is almost ignored.