Magnesium anode material manufacturer of oil pipeline / trustworthy

  Magnesium anode material manufacturer of oil pipeline / trustworthy
General pure magnesium anodes are rarely used because of their low current efficiency (only about 30%) and short service life
Compared with mg-1
27mn), the current efficiency of the new alloy anode is significantly improved, reaching 62
36% (Mg Mn alloy is 50
94%), and its driving voltage is also increased
According to the research, after adding calcium, the alloy grain is refined, and mg2ca cathode compound is precipitated on the grain boundary of magnesium matrix, which reduces the tendency of intergranular corrosion, reduces the spalling of grain, and makes the dissolution of the alloy uniform
This is the main reason why Mg Mn CA alloy has better electrochemical properties [1]

Magnesium anode material manufacturer of oil pipeline / trustworthy
According to the different contents of aluminum and zinc, the properties are different
Among them, mg-6al-3zn Mn alloy with good properties and wide application is mainly mg-6al-3zn Mn alloy, with uniform surface dissolution and current efficiency greater than 50% Aluminum is the main alloy element in the anode
It can form mg17 A112 strengthening phase with magnesium to improve the strength of the alloy
However, when aluminum is added to industrial magnesium alone, a large number of intermetallic compounds such as mg Al, mg2a13 and Mg4 A13 can be formed
The existence of these intermetallic compounds will increase the self corrosion rate of magnesium and accelerate the destruction of solid solution
Zinc can reduce the corrosion rate of magnesium, reduce the negative difference effect of magnesium and improve the anode current efficiency

Magnesium anode material manufacturer of oil pipeline / trustworthy
Trace manganese can counteract the adverse effects of impurities iron and nickel
When the addition of manganese is 0
3%, the allowable content of iron can reach 0
02%, but it will also reduce the current efficiency
Therefore, the content of impurity iron and the corresponding manganese content should be as low as possible
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