A brief introduction of plating
A brief introduction of plating
Plating is a surface covering way by which a metal is deposited on a conductive surface. Plating has been done for hundreds of years, and it is also critical for modern technology.
There are some plating methods. In one method, a solid surface is covered with a metal sheet, and then heat and pressure are applied to fuse them. Other plating techniques include vapor deposition under vacuum and sputter deposition. Besides, in electroplating, an ionic metal is supplied with electrons to form a non-ionic coating on a substrate. A common system involves a chemical solution with the ionic form of the metal, an anode that may consist of the metal being plated, and then we need a cathode where electrons are supplied to produce a film of non-ionic metal. Electroless plating is a non-galvanic plating method, and it involves several simultaneous reactions in an aqueous solution, which occur without the use of external electrical power. The reaction is accomplished when hydrogen is released by a reducing agent, thus producing a negative charge on the surface of the part. The most common electroless plating method is electroless nickel plating. Recently, plating often refers to using liquids. Metallizing refers to coating metal on non-metallic objects.
Plating is used to prevent object from the corrosion, and it is used to improve the ability of solder, to improve the ability of wear, to improve paint adhesion, to alter conductivity, for radiation shielding, and so on. What’s more, Jewelry typically uses plating to give a silver or gold finish. Thin-film deposition has plated objects as small as an atom, therefore plating also can be used in nanotechnology.
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