When metal products are exposed to air and water vapor for a long time, they are easily susceptible to oxidative corrosion, resulting in rust on the metal surface.
In order to solve the problem of metal corrosion, people invented anti-rust paint. Its anti-rust principles mainly include barrier principle and cathodic protection principle.
First of all, one of the anti-rust principles of anti-rust paint is the barrier principle. Anti-rust paint contains substances that can form a protective film. This protective film can cover the metal surface, blocking air and water vapor and preventing them from corroding the metal. This layer of protective film plays a role in isolating the metal from the external environment, thereby extending the service life of the metal products.
Another rust prevention principle is the principle of cathodic protection. Antirust paint usually contains certain metal ions. These metal ions can form a protective electrochemical barrier on the metal surface, turning the metal into an anode, thereby reducing the oxidation reaction on the metal surface and slowing down the corrosion rate of the metal. This anti-rust paint can form cathodic protection like zinc, aluminum and other metals, thereby achieving effective rust prevention of metals.
In general, the anti-rust principle of anti-rust paint mainly delays the occurrence of metal corrosion through barrier and cathodic protection, and protects the quality and service life of metal products. Therefore, in actual engineering applications, it is very important to choose appropriate anti-rust paint, which can maximize the life of metal products and reduce maintenance costs.
Post time: Jan-18-2024