What is the composition of the magnesium alloy sacrifice anode? What are the effects of each metal on the magnesium alloy anode

Jiaozuo Ladbrokes light alloy has collected the following articles, mainly about the composition of magnesium alloy sacrificial anode, and the role of each metal on magnesium alloy anode, to help you to better use magnesium anode! The reason why the sacrifice anode of magnesium alloy is called alloy is mainly because it smelts many elements with higher potential than magnesium, such as aluminum, nickel, copper, silicon, iron, etc. If you need to buy magnesium anode, learn more about this knowledge, jiaozuo Ladbrokes light alloy welcome to inquire!

Aluminum (Al), aluminum at high potential is a harmful element. Aluminum at high potential can form a cathode phase with magnesium, which accelerates the corrosion rate. Therefore, the presence of Aluminum can lead to a decrease in the solubility of manganese in magnesium.

Nickel (Ni), when Nickel and magnesium form Mg2Ni, Usually Mg2Ni will be distributed on the surface of grain boundary in a network, resulting in accelerated corrosion of magnesium alloy sacrificial anode, resulting in decreased current efficiency.

Copper (Cu), which forms Mg2Cu or MgCu2 with magnesium, is distributed at the grain boundary. Its effect on the magnesium alloy anode is to increase the self-corrosion of the magnesium alloy sacrificial anode and reduce the efficiency of current flow.

Silicon (Si), which has a very small solubility in magnesium, forms Mg2Si with Magnesium and distributes in the grain boundary and in the crystal. When Si and Fe coexist in the alloy, the autolysis tendency of magnesium alloy is gradually increased, and the current efficiency of magnesium alloy sacrifice anode is decreased.

Iron (Fe) : The solubility of Fe in the anode is very small, because there is a large potential difference between Fe and Mg, the current is easy to generate, which will accelerate the corrosion rate of the alloy and reduce the current efficiency of the anode.

Manganese (Mn) : Manganese is often used in magnesium alloy anode elements, because it is easy to combine with harmful impurities, improve the corrosion resistance of the alloy, reduce the impact of other elements on the corrosion resistance of the alloy.