How To Protect Metal From Corrosion: Corrosion is one of the most common things that happen to any type of Metal. It happens when metal is revealed to moisture and other gases, elements or chemicals. While it is usually a natural process it can drive to a drastic decrease in the functionality and character of metal products.
Before beginning to steps to how to protect metal from corrosion we should understand a little bit about corrosion.
What is corrosion?
Corrosion is a decay of a material affected by interactions with environmental elements. It is a natural event, requiring three conditions: a metallic surface, moisture, and an oxidizing agent identified as an electron acceptor. The method of corrosion changes the reactive metal exterior into a more stable form; mainly it is oxide, sulphide, or hydroxide. Rust is the most common form of corrosion.
Corrosion can have different types of negative effects on metal. When metal formations undergo corrosion process, they become dangerous to use which can lead to accidents, such as breakdowns.
Even unimportant corrosion needs maintenance and repairs. In fact, the annual direct loss of money to metallic corrosion is almost $2.2 Trillion USD globally!
It is said that while all metals corrode, it is predicted that 20-35% of corrosion could be stopped using proper protection methods.
Common Types of Metal Corrosion
Due to the fact that a wide range of different types of metal is in use today, manufacturers and industrialists need to protect their merchandise against a wide array of metal corrosion. Each metal has its own unique electrochemical attributes which define that the metal is vulnerable to which kind of corrosion. We are providing the detail in the table below contains a selection of most common metals and the types of corrosion that can affect it.
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Methods of Stopping & Preventing Metal Corrosion
In most of the situations, by using the proper procedures metal corrosion can be controlled, slowed, or even stopped. There are various types of Corrosion preventions depending on the circumstances of the metal is corroded. Corrosion prevention procedures can be commonly divided into 4 parts:
- Cathodic Protection
- Rust Preventive Oil
- Corrosion Inhibitors
- Environmental Measures
The coating of iron alloy steel with zinc is the most common example of Cathodic protection, a process known as galvanizing. Zinc is a more volatile metal than steel, and when it begins to corrode it oxides which hinder the corrosion of the steel. This process is known as cathodic protection because it acts by making the steel the cathode of an electrochemical cell. Cathodic protection is practiced for steel pipelines transporting water or fuel, ship hulls, water heater tanks, and offshore oil platforms.
Rust Preventive Coating
Rust Preventive Coating application is a budget-friendly way of preventing corrosion. These coatings act as a shield to stop the transfer of electrochemical charge from the corrosive solvent to the metal below.
Corrosion inhibitors are compounds that react with the exterior of the metal or the surrounding gases to hinder the electrochemical reactions leading to corrosion. They operate by being applied to the exterior of a metal where they form a protective layer. Inhibitors can be implemented as a solvent or as a protective layer using dispersion systems. Corrosion inhibitors are usually implemented via a method acknowledged as passivation.
A chemical reaction between the metal and gases in the surrounding environment causes corrosion. The unwanted environmental reactions can be reduced by taking steps to regulate the environment. This can be as easy as reducing exposure to seawater or rain, or more complicated measures, such as regulating the quantities of oxygen, sulphur, or chlorine present in the surrounding environment.
Zavenir Daubert is the world’s leading Anti-corrosive Solution provider with over decades of experience. We are Rust remover experts and have been providing quality customer service and products since 1995.