Plating

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For other uses, see Plate.

Plating describes surface-covering where a metal is deposited on a conductive surface. Plating has been done for hundreds of years, but it is also critical for modern technology. Plating is used to decorate objects, for corrosion inhibition, to improve solderability, to harden, to improve wearability, to reduce friction, to improve paint adhesion, to alter conductivity, for radiation shielding, and for other purposes. Jewelry typically uses plating to give a silver or gold finish. Thin-film deposition has plated objects as small as an atom, therefore some plating isnanotechnology.

There are several plating methods, and many variations. In one method, a solid surface is covered with a metal sheet, and then heat and pressure are applied to fuse them (a version of this is Sheffield plate). Other plating techniques include vapor deposition under vacuum andsputter deposition. Recently, plating often refers to using liquids. Metallizing refers to coating metal on non-metallic objects.

Contents  [hide] 1 Electroplating 2 Electroless plating 3 Specific cases 3.1 Gold plating 3.2 Silver plating 3.3 Rhodium plating 3.4 Chrome plating 3.5 Zinc plating 3.6 Tin plating 3.7 Alloy plating 3.8 Composite plating 3.9 Cadmium plating 3.10 Nickel plating 4 See also 5 References

the basics of Plating