What is the sacrificial anode method

What is the sacrificial anode method? What are the materials of sacrificial anode? What are the characteristics of sacrificial anode protection

Sacrificial anode method is usually called cathodic protection system together with current cathodic protection system. However, sacrificial anode method obviously has its unique advantages, so it is often used to protect oil pipelines and transport ships. Today, we jiaozuo Ladbrokes light alloy will introduce to you: what is the definition of sacrificial anode, what is the material of sacrificial anode, and what are the characteristics of sacrificial anode protection?

Knowledge of sacrificial anodes

Definition 1:

Sacrificial anode protection is that in the earth battery formed by protecting metal and sacrificial anode, the protected metal body acts as the cathode, and the potential of the magnesium alloy sacrificial anode is often less than that of the protected metal body, and the magnesium alloy sacrificial anode is consumed by corrosion. Knowledge of sacrificial anodes

2: Common materials

Magnesium and magnesium alloys, magnesium anode suitable for fresh water and high soil resistivity soils

Zinc alloy, zinc anode is mainly used in soil and sea water with low soil resistivity;

Aluminum alloy, aluminum anode is mainly used in seawater, sea mud and crude oil storage tank sewage medium.

Sacrificial anode method knowledge 3: protection characteristics applicable to a wide range, especially in the short and medium distance and those complex pipe networks.

The anode output current is small, which reduces the probability of cathode stripping.

It is constructed at the same time with pipeline installation, with small engineering quantity and simple maintenance work in the later period.