Elektrolissipinnointia

Elektrolissipinnointia, often referred to as electroplating, is a manufacturing process used to deposit a thin layer of metal onto a substrate through electrochemical means. This technique is widely employed for decorative purposes, to improve corrosion resistance, or to enhance the electrical conductivity of a component.

The process involves immersing the object to be plated, which acts as the cathode, into an electrolytic solution containing ions of the desired plating metal. An anode, typically made of the same metal or an inert material, is also placed in the solution. When an electric current is applied, metal ions in the solution are attracted to the cathode and deposit onto its surface, forming a uniform coating. The thickness and properties of the plating can be controlled by adjusting parameters such as current density, temperature, and the composition of the electrolyte.

Commonly plated metals include chromium, nickel, copper, zinc, gold, and silver. Each offers distinct properties and applications. For example, zinc plating provides excellent corrosion protection for steel, while gold plating is used for its conductivity and aesthetic appeal in electronics and jewelry. Proper surface preparation of the substrate is crucial for good adhesion and a flawless finish. This typically involves cleaning and degreasing to remove any contaminants.