Platinapäällyste

Platinapäällyste refers to a thin layer of platinum that has been applied to the surface of another material. This coating process is commonly used to enhance the properties of the underlying substrate, often for decorative or functional purposes. Platinum is a precious metal known for its exceptional resistance to corrosion and tarnishing, its high melting point, and its catalytic activity.

The application of a platinapäällyste can be achieved through various electroplating or chemical vapor deposition techniques. Electroplating involves immersing the object to be coated in an electrolyte solution containing platinum ions, and then passing an electric current through the solution. This causes the platinum ions to deposit onto the surface of the object. Chemical vapor deposition involves using gaseous precursors that decompose at high temperatures, depositing a platinum layer onto the substrate.

One of the primary uses of platinapäällyste is in jewelry, where it provides a durable, lustrous, and hypoallergenic finish. It is also utilized in the electronics industry, particularly in connectors and contacts, due to platinum's excellent conductivity and resistance to oxidation, which ensures reliable electrical connections. In scientific and industrial applications, platinapäällyste is found on electrodes and catalysts, where its inertness and catalytic properties are essential for chemical reactions and electrochemical processes. The thickness of the platinapäällyste can vary significantly depending on the intended application, ranging from a few nanometers to several micrometers.