Electroplating, also known as metal plating, is a technique that involves applying a thin metal coating to a substrate, increasing different properties of the metal, such as corrosion resistance, and even adding new ones, such as conductivity or magnetism. One of the most appealing features of metal plating is the increased resistance to high temperatures it can provide if done correctly.
Because all metals respond differently to high temperatures and have varying melting points, choosing one with the correct heat resistance is critical. High-temperature alloys often have an iron, nickel, or cobalt-base and contain refractory metals, which are metals with high melting points.
Refractory metals have the highest heat resistance of any metal, making them ideal metal coatings for high-temperature applications. However, they also oxidise at low temperatures, necessitating the application of a protective coating before employing them in high-temperature conditions.
Why is it critical to apply the right metal coating?
It’s critical to understand a part’s conditions before choosing a metal plating finishing method. For example, knowing the maximum temperature your part can achieve, while not the only factor to consider, can help you avoid heat damage to your product, which in certain situations can be permanent. It can also extend the life of a component.
Some metal coatings may be suitable, but they do not have the same properties as other metals. For example, some metals are less conductive than others, and some metals are more corrosive, so your part may not perform as well as it could.
Metal plating for high temperatures includes the following types:
Plating with nickel
Nickel is a metal known for its hardness and corrosion resistance, wear resistance, and weather resistance. Nickel coatings are sometimes alloyed with tungsten, tin, boron, and manganese to improve corrosion resistance, hardness, and conductivity. The automobile, aerospace, telecom, and textile industries employ nickel metal plating.
Plating in Copper
Copper has excellent thermal and electrical qualities and corrosion resistance, and malleability. It is precious in the electrical, thermal, and industrial sectors because of these qualities. Because copper plating allows for selective heat-treating, it can also be utilised as a heat-treat stop-off for masking. On the other hand, Copper is highly active, making it unsuitable for several purposes.
Plated in gold
Due to its superior conductivity, gold plating is utilised extensively in electrical components. Still, it is also widely used in the aerospace, medical, and jewellery industries for its corrosion, wear, and heat resistance. Despite its high cost, gold plating is highly effective and could save money in the long run.
Metal Plating in silver
Silver, like gold, is a noble metal that is resistant to corrosion and oxidation.
Silver metal plating resists corrosion, is chemically and academically resistant and has excellent thermal and electrical conductivity. In addition, most metals can be alloyed with silver very simply. Because of these properties, the silver coating is widely used in the telecommunications, automotive, electronics, and solar energy industries. It’s also helpful in medicine because of its antibacterial characteristics.
Plating with zinc
Zinc has high corrosion resistance, further strengthened by alloying it with other metals like nickel. Zinc nickel plating, which was initially developed for the automobile sector because of its superior heat resistance, has ten times the resistance of zinc plating. Zinc plating is commonly used to plate nuts, bolts, and minor components, and because of its excellent adhesiveness, it can also be used as an undercoat on a surface before painting.
We at Smart Microns believe in creating custom solutions as services towards each client’s unique requirements. The range of services we offer include everything from plating to final testing