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Development status of cathodic protection technology in China
China's pipeline cathodic protection technology is relatively late, but with the rapid development of pipeline transportation industry, since the late 1970s, China's long-distance pipeline basically adopts cathodic protection tec...Views -
What are the main advantages of flexible anode compared with common centralized buried anode?
Compared with the conventional centralized buried anode, flexible anode has the following advantages:1. Flexible anode can overcome the influence of environment, that is, it can provide stable output current and maintain the stability of...Views -
Sacrificial anode protection of cathodic protection technology(1)
The sacrificial anode protection method refers to the method of metal corrosion prevention in corrosive medium, when the sacrificial anode and the protected metal form an electrical connection, and the current released by the sacrificial...Views -
Sacrificial anode protection of cathodic protection technology(2)
3. Aluminum based sacrificial anodeThe density of aluminum is small, the theoretical electric quantity is large, the current efficiency is high (generally 85%), and it has large electronegativity. Therefore, in theory, aluminum is a good...Views -
Operation and maintenance of cathodic protection system(1)
1.Preparation and acceptance of cathodic protection before putting into operationBefore cathodic protection is put into operation, the pipeline to be protected shall be inspected. If there is no insulation, there is no protection. Before...Views -
Operation and maintenance of cathodic protection system(2)
4. Search for leakage point of anticorrosive coatingThe method of using DCVG to find the damaged point of anticorrosive coating of pipeline and determine the leakage point or short contact point of pipeline. This method first sends the ...Views -
Electrochemical protection technology
Electrochemical protection is a kind of material protection technology that changes the potential of metal by the inflow of external current, so as to reduce the corrosion rate of metal.1.Brief introduction of electrochemical protectionA...Views -
Impressed current cathodic protection technology for shallow buried anode ground bed
1. Classification of shallow buried positive polar beds(1) According to the construction method, the shallow buried anode can be divided into:1. Horizontal embedding: generally in the depth of 3000-10000mm;2. Vertical embedding: the diam...Views -
Impressed current cathodic protection technology for deep well anode ground bed
The deep well anode ground bed is located at the place where the surface soil resistivity is relatively high and decreases with the depth. This installation form is suitable for local cathodic protection in densely populated areas a...Views -
Difference between cathodic protection and anodic protection
1. Principle(1). Principle of cathodic protection:When the metal electrolyte dissolution corrosion system is subject to cathodic polarization, the potential shifts negatively, and the reaction overpotential η a decreases, and the reacti...Views -
What are the types of pipeline corrosion?
According to the different corrosion mechanism of pipeline, pipeline corrosion can be divided into the following types:1. Oxygen absorption corrosionPetroleum and its products often contain water and dissolved oxygen. The corrosion of mo...Views -
Pipeline Corrosion Prevention Mitigates Devastating Failures
Corrosion is one of the biggest problems contributing to leaks and ruptures of pipelines. Corrosion is the natural process where materials made from metal electrochemically react with the environment and deteriorate. Without proper ...Views