Low Density High Potential Magnesium 20D2-2 Sacrificial Anode

Low Density High Potential Magnesium Anode With High Chemical Activity
 
Introduction:
 
The earliest pure magnesium was used as a high-potential magnesium anode, followed by the Mg-Mn system with higher current efficiency, reaching about 50%. Relevant studies have shown that the chemical composition of the anode has a greater impact on the current efficiency and open circuit potential of the anode.
 

The main characteristics of high-potential magnesium alloy sacrificial anodes are large electricity per unit mass, high potential, small specific gravity, relatively negative potential, high driving voltage to Fe, low current efficiency, etc., especially suitable for high resistivity media. When using magnesium alloy sacrificial anode, care should be taken to avoid collision with steel structure. Both the American standard ASTM8431993 (2003) and the Chinese standard GB/T177312004 require that the current efficiency of high-potential magnesium alloy sacrificial anodes be higher than 50% and the potential higher than 1.77 V.

Chemical composition %:

 
The electrochemical performance of:
 

Specification:

Advantage:

Cathodic protection technology is to use a metal or alloy whose potential is more negative than the metal to be protected to be electrically connected to the metal to be protected, and rely on the current generated by the continuous corrosion and dissolution of the metal with a negative potential to protect others.

A: The one-time investment cost is low, and there is basically no need to pay maintenance costs during operation
B: The utilization rate of the protection current is high, and no over-protection will occur
C: No interference effect on adjacent underground metal facilities, suitable for plant area and long-distance pipeline without power supply, as well as small-scale decentralized pipeline protection
D: It has the function of both grounding and protection
E: The construction technology is simple and usually does not require special professional maintenance and management.

Application:

Magnesium anode is the use of magnesium negative potential, its potential is lower than steel, can be used to protect onshore pipelines and other buried structures, such as oil pipelines, natural gas pipelines, underground oil tanks, oil platforms, water heaters, and for the protection of fresh water ships in the environment.

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