Aluminum-Zinc-Indium-Tin Alloy Sacrificial Anode (Model 12)

Chang Qing 13939157916

Aluminum-Zinc-Indium-Tin Alloy Sacrificial Anode (Model 12)

Aluminum-Zinc-Indium-Tin Alloy Sacrificial Anode (Model 12), with chemical composition including 2.2-5.2% zinc, 0.020-0.045% indium, 0.018-0.035% tin, etc.

Aluminum Alloy Sacrificial Anode Industrial Product

Mostly used for cathodic protection of metal structures in seawater environments or the bottom plates of crude oil storage tanks, not suitable for soil environments with low chloride ion content (for indium-containing anodes, chloride ion content greater than 1000 ppm; for mercury-containing anodes, 10000 ppm). Its electrode potential is -1.05V CSE. When the temperature exceeds 49°C, the electrical capacity decreases with temperature, refer to the formula: Z=2500-27(T-20), (T anode operating temperature °C). In brackish water, the current capacity may be reduced to half. Aluminum anodes are directly fixed to the protected structure without the need for backfill.

The main function of aluminum alloy sacrificial anodes is to serve as anode blocks for anti-corrosion. They protect other metals or equipment from corrosion by sacrificing themselves. Aluminum alloy sacrificial anodes are typically installed on equipment such as pipelines, storage tanks, ship hulls, etc. When connected to the protected metal and in the same electrolyte, the aluminum alloy is preferentially corroded, thereby protecting other metals from corrosion‌12.

Characteristics of Aluminum Alloy Sacrificial Anodes

1. Excellent electrochemical performance: Aluminum alloy sacrificial anodes perform excellently in seawater and other media containing chloride ions, with strong self-regulating ability and high power output per unit weight of material‌34.
2. Wide range of applications: Suitable for ships, mechanical equipment, inner walls of storage tanks, coastal facilities, etc., in seawater media, but not for soil environments with low chloride ion content‌4.
3. Long service life: Aluminum alloy sacrificial anodes have a long service life and are the only type of anode that can be used in any water body (such as freshwater, brackish water, or saltwater)‌1.