What is Electroplating
What is Electroplating
Electroplating is the use of electrolysis principle in some metal surface coated with a thin layer of other metals or alloys, the use of electrolysis is to make metal or other materials attached to the surface of the metal film process to play a role in preventing metal oxidation Such as rust), improve wear resistance, conductivity, reflectivity, corrosion resistance (copper sulfate, etc.) and enhance the appearance and so on. The outer layer of many coins is also electroplating.
Effects
Electroplating changes the chemical, physical, and mechanical properties of the workpiece. An example of a chemical change is when nickel plating improves corrosion resistance. An example of a physical change is a change in the outward appearance. An example of a mechanical change is a change in tensile strength or surface hardness which is a required attribute in tooling industry.[10] Electroplating of acid gold on underlying copper- or nickel-plated circuits reduces contact resistance as well as surface hardness. Copper-plated areas of mild steel act as a mask if case hardening of such areas are not desired. Tin-plated steel is chromium-plated to prevent dulling of the surface due to oxidation of tin.
Electroplating, or electroless plating may be used as a way to render a metal part radioactive, by using a aqueous solution prepared from nickel–phosphorus concentrates which contain radioactive hypophosphite 32P ions. Such a part might be used for the purposes of brachytherapy.
Uses
Electroplating is widely used in various industries for coating metal objects with a thin layer of a different metal. The layer of metal deposited has some desired property, which the metal of the object lacks. For example, chromium plating is done on many objects such as car parts, bath taps, kitchen gas burners, wheel rims and many others for the fact that chromium is very corrosion-resistant, and thus prolongs the life of the parts. It is also used in making expensive jewelry.
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