Magnesium alloy sacrificial anode for marine equipment anticorrosion

For equipment working in seawater, it is a very harsh corrosive environment. Marine equipment is prone to corrosion, and it is difficult to operate, maintain and maintain.

more difficult. Sacrificial anode cathodic protection is an effective method to prevent corrosion of large metal structures. It has many advantages such as easy maintenance and no external power supply. The development of modern blue economy has promoted the popularization and application of magnesium alloy anodes in marine installations.

Magnesium alloy sacrificial anode has the following advantages:

1. Simple installation and maintenance, low cost
2. No external current required, less pollution to the environment
3. Corrosion protection control effect is good.

Due to the high chemical activity of magnesium alloys, strong self-corrosion, and no dense protective film on the surface, the current efficiency of magnesium-based anodes is much lower than that of aluminum-based and zinc-based anodes, usually around 50%. The outstanding advantages of magnesium-based anode materials are low density, large theoretical capacitance, negative potential, and low polarizability.

Magnesium-based sacrificial anodes can be used to protect machinery and equipment in freshwater and seawater media, port facilities, ships, offshore drilling, etc. At present, the domestic magnesium anode market in my country is gradually expanding. As a new anode material, magnesium has begun to be used in marine engineering protection with special requirements.