Plating: The process of plating a thin layer of other metal or alloy on certain metal surfaces using the principle of electrolysis. It mainly prevents metal oxidation (such as rust), improves wear resistance, electrical conductivity, light reflection, corrosion resistance (copper sulfate, etc.) and enhances aesthetics. The outer layers of many coins are also electroplated.
1. Copper plating: used for primers to improve the adhesion of the plating layer and the ability to resist corrosion.
2, tin-plated lead: improve the welding ability, quickly replaced by other substitutes.
3. Gold plating: Improve the conductive contact resistance and improve signal transmission.
4, nickel plating: use the bottom or make the appearance, improve the corrosion resistance and wear resistance.
5, palladium-plated nickel: improve the conductive contact resistance, improve signal transmission, wear resistance is higher than gold.
6. Silver plating: Improve the conductive contact resistance and improve signal transmission.
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