Four metals used in the plating process
Plating processes are essential across automotive, aerospace and electronics manufacturing, providing durability, conductivity or corrosion protection depending on the metal chosen. While many options exist, four stand out for their versatility and widespread industrial use.
Copper
Copper is typically used as a base layer due to its excellent adhesion and conductivity. It creates a smooth, even surface, allowing subsequent layers to form a consistent barrier. Industries dealing with printed circuit boards and electrical components rely heavily on copper plating for low resistance and efficient current flow.
Nickel
Nickel adds toughness and abrasion resistance. It is often used for decorative purposes too, thanks to its bright metallic finish. In engineering applications, it provides wear protection on moving parts.
Nickel can also be alloyed with zinc to create zinc nickel plating, which delivers impressive corrosion resistance in harsh environments. Here you can read more about zinc nickel plating.
Zinc
Zinc is widely applied to steel parts to prevent rust. It acts as a sacrificial coating, corroding before the underlying metal.
The process of zinc nickel plating is gaining preference when standard zinc is not sufficient, offering extended protection in marine or agricultural settings. Guidance is available from websites such as https://www.swmf.co.uk/surface-coatings/zinc-nickel-alloy-plating/.
Gold for precision components
Gold plating is reserved for high-performance electronic connections. It resists oxidation and maintains conductivity even when exposed to moisture or fluctuating temperatures. Although costly, its reliability makes it indispensable in aerospace, medical devices and telecommunications.
Each metal offers distinct advantages, but the correct choice ultimately depends on the working environment and required functional properties.
