Different Kinds Of Metal Coating

There are several ways for coating metallic surfaces with each set of advantages and disadvantages. 

Fremont, CA: Metals have been the go-to material for various applications for ages due to their durability, adaptability, and strength. However, corrosion is undoubtedly the most prevalent and publicly acknowledged difficulty individuals confront while employing metals.

Several strategies have been offered to increase metallic constructions' lifetime and corrosion resistance. However, metal coatings stand out as among the cheapest and most convenient means of protection.

Let's see some of the main types of metal coatings.

Anodizing

Anodizing is a procedure that promotes the creation of a protective oxide coating on a metal's surface. The resultant oxide layer builds faster and is often thicker than it forms normally. While numerous non-ferrous metals may be anodized, aluminum is the most effective.

Anodizing is accomplished by immersing the aluminum component in a tank containing an electrolytic solution and a cathode (usually aluminum or lead). When an electrical current is passed from the aluminum, it oxidizes and forms a protective barrier.

Galvanizing

Galvanizing is the process of immersing a metal (usually steel or iron) inside a melted zinc bath. When the coated metal is removed, it combines with the oxygen and carbon dioxide in the environment to generate a resistant zinc carbonate layer.

Galvanizing is also well-known for providing galvanic protection. In other words, if the metal's surface gets exposed owing to scratches, scrapes, or dents, the zinc coating would sacrifice itself via preferentially corroding. Such a procedure aids in protecting the steel substrate during maintenance procedures.

Electroplating

Electroplating, often referred to as electrodeposition, is depositing a thin coating of one metal on the surface. Both metals are immersed in an electrolytic solution during electroplating. The anode is metal-coated, while the cathode is the coating metal. An electric current is sent through the electrolytic cell, forcing metal ions to flow from cathode to anode, resulting in the formation of the coating.

Electroplating provides great corrosion protection and can improve some of the mechanical qualities of metals. Electroplating also creates a visually appealing surface finish, rendering it excellent for coating jewelry and decorations.