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Platinum is a precious metal and it adds value, durability and longevity to the products that are plated with it. Plating with this material is more expensive than other coatings like nickel, but its unique properties make it a good choice for many applications.
Enhanced aesthetics: A platinum coating enhances the look of a product. This noble metal is bright and resistant to corrosion. Its luster and resistance to oxidation are reasons why platinum is used in jewelry. It also has a low melting point, making it an effective insulator.
Conductive: A platinum plate can be used as a counter or auxiliary electrode in electrochemical experiments such as cyclic voltammetry and linear sweep voltammetry. The platinum electrode increases the surface area of the working electrode, which can help to increase the sensitivity of the results.
Resistant to heat: Parts that are exposed to extreme temperatures benefit from a platinum coating. This precious metal has a melting point of 3,224° F, and it can be plated to prevent corrosion under high temperatures.
Harder: A platinum coating has a hardness of 4 to 4.5 on the Mohs scale of hardness. This makes it tougher than silver and gold.
Plated as a layer on top of aluminide: When a component needs a higher level of oxidation protection than what aluminide provides, we can plate it with platinum before the aluminide cycle to create a platinum aluminide (PA). This process slows the oxidation rate and extends the life of the component under high temperature conditions.