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What is a zinc alloy sacrificial anode
Zinc alloy sacrificial anode has high electrochemical performance, good performance in seawater and other media containing chloride ions, and strong self-regulating ability of current. It is mostly used in soil environment or seawater environment where the soil resistivity is less than 20 ohms · m.
Zinc sacrificial anode is mainly used in soil or seawater environment where the soil resistivity is less than 20 ohms · m. The electrode potential is -1.10VCSE and the driving voltage is 0.25V. When the temperature is higher than 49℃, intergranular corrosion occurs. When the temperature is higher than 54℃, the electrode potential of the zinc anode becomes positive, and the polarity of the zinc anode is reversed, becoming the cathode to be protected, while the steel becomes the anode to be corroded. Therefore, zinc anode is generally used for temperature below 49℃ environment. Zinc anodes must use backpacking.
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