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What is magnesium alloy sacrificial anode
The current efficiency of magnesium anodes is about 50%, and may be lower due to environmental effects. When the salt content of soil or water is low, the current output is small, and therefore, its own corrosion is relatively large. When the soil resistivity is high, the anode output current is small, the anode surface is easy to passivation, further increase the ground resistance, the anode output current is further reduced. At this point, there may be no significant change in the open-circuit potential of the anode or in the pipeline potential measured at the energized point. When the temperature rises, its own corrosion intensifies and efficiency decreases. Therefore, in salt water or salt water, the use temperature should not exceed 32℃; In fresh water, should not exceed 45℃, in sea water, its life is very short, should not be used.
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