Definition 1: The anode is gradually consumed by the outflow current, so it is called a sacrificial anode. This anode consumes quickly and must be installed in a position and method that is easy to replace. Low potential metal materials include magnesium, magnesium alloy, pure zinc, zinc alloy, aluminum alloy, etc

Definition 2: This method is called sacrificial anode cathodic protection. Active metals or alloys are called sacrificial anodes. Sacrificial anode cathodic protection is one of the earliest electrochemical protection techniques

Definition 3: After the protection of the anode is obtained, the anode is gradually consumed, so it is called the sacrificial anode.2) The forced current method is to apply a cathode current to the protected metal structure and an anode current to the auxiliary anode to form an erosion current so that the metal structure can be protected

Definition 4: Because the erosion of the metal protects the original corroded battery and speeds up the erosion of its own, it is called the sacrificial anode. The sacrificial anode material shall satisfy the following requirements :(l) it shall have sufficient negative potential and be not disorderly

Definition 5: Sacrificialanode Method The sacrificialanode is made of a golden sacrificialmaterial with a relatively negative sacrificialpotential. When it is connected to the protected pipeline, the sacrificialanode preferently dissociates itself so as to resist the erosion of the pipeline, so it is called the sacrificialanode. The sacrificial anode should have enough negative nondisturbance potential to maintain a large enough driving voltage, a large theoretical electricity generation, but also a high and nondisturbance current efficiency

Definition 6: A metal or alloy with a negative potential is called a sacrifice anode. Considering the explosive risk of the original oil and gas itself to avoid stray current, the applied current erosion prevention method in the crude oil storage tank is not reliable