Zinc Alloy Sacrificial Anode

Zinc alloy sacrificial anodes have very high electrochemical performance, good performance in seawater and other media containing chloride ions, and strong self-regulating ability of sending current.It is suitable for cathodic protection of metal corrosion prevention of ships, machinery and equipment in seawater and fresh seawater medium, Marine engineering and harbour facilities, as well as pipeline, cable and other facilities in low resistivity soil.

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Product introduction

Zinc sacrificial anodes are mostly used in soil environments with soil resistivity less than 20 ohms · m or seawater environments. The electrode potential is -1.10VCSE and the drive voltage is 0.25V. When the temperature is higher than 49 ° C, intergranular corrosion occurs, and when the electrode potential of the zinc anode is higher than 54 ° C, the polarity of the zinc anode is reversed, and the cathode is protected, while the steel becomes the anode is corroded. Therefore, zinc anodes are generally used at temperatures below 49 ° C. Zinc anodes must be backfilled.

The company's zinc alloy sacrificial anodes are produced according to the national standard GB/T4950-2002 "Zinc-aluminum-cadmium alloy sacrificial anodes", and the anodes used for pipelines also comply with SY/T0019-97 "Design Code for cathodic Protection of sacrificial anodes for Buried Steel Pipelines".

Product Parameter

Chemical component
Element	Al	Cd	Fe	Cu	Pb	Zn
Zinc alloy	0.1~0.5	0.025~0.07	≤0.005	≤0.005	≤0.006	Surplus
High purity zinc	≤0.005	≤0.003	≤0.0014	≤0.002	≤0.003	Surplus

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