Manganese is easy to combine with harmful impurity elements, b'hekk eliminazzjoni l-effett of Fe on the corrosion resistance of the alloy, so that the corrosion rate is greatly reduced. Manganiż u ħadid Mn - Fe compound formazzjoni, due to the effect of gravity compound precipitation in the bottom of the crucible, the rest is not form chemical compounds of Fe is surrounded by manganese, b'dan ħafna reducing the feeling now is is effect on the corrosion resistance of alloy, in the very is all don't know the increase current efficiency, to reduce Fe anode in the harm of Fe% 3a Il proporzjon ta' Mn should be less than 0.032.
Fe: The solubility of Fe in the anode is very small. During the crystallization process of the alloy liquid, Fe precipitates on the grain boundary to form a galvanic pair with magnesium. Due the large potential difference between Fe and Mg, it is easy to generate current%current, li ,:generate current, li jaggrava l-anodika awtoliżi tendenza, accelerates the corrosion rate of the alloy, and reduces the current efficiency of the anode.
Ni: It forms a compound Mg2Ni with magnesium, li is huwa distribwit fuq il-qamħ limitu in il form form a network. The corrosion of magnesium anode will be aggravated and the current efficiency will be be reduced.
Cu: Forms Mg2Cu, or MgCu2, with magnesium, and distributes at grain boundaries, li increases the self-corrosion of the magnesium anode together and reduces the current efficiency of the anode.
Iva: Is-solubiltà fil-manjeżju hija żgħira ħafna, u f'ħafna każijiet, hija ħafna aħdar u forma tal-manjeżju. Mg2Si huwa distribwit fil-fruntiera tal-granuli u ġewwa l-kristall. Meta jikkoinċidi ma' Fe, it-tendenza għall-awtolisi tal-alloy tal-manjeżju tiżdied, u l-effiċjenza attwali tal-anodu tiġi rduppjata.
Al: Aluminju in għoli potenzjal is a harmful element, li jista form cathode phase with magnesium and accelerat the corrosion rate. The presence of aluminum also reduces the solubility of manganese in magnesium.