Tungsten and molybdenum are considered refractory metals because of their intrinsic properties, such as corrosion resistance, good conductivity, and a very high melting point. Nonetheless, there are some distinct variances amongst these heavy metals that affect their applicability for particular uses. Therefore, we’ll take a deeper look at each tungsten and molybdenum element in this section.
WHAT IS PLATING
Plating is a subset of finishing operations that include adding a metal coating on a base metal substrate to provide the product with certain desirable qualities. In today’s industrial applications, plating is critical. In addition, the material’s lifetime is significantly increased as a result of this treatment.
There are two types of plating:
Electroplating is the process of supplying electrons to an ionic metal to generate a non-ionic coating on a substrate. A common setup consists of a chemical solution containing the metal’s ionic form, an anode, and a cathode where electrons are provided to make a non-ionic metal sheet. For example, in the automobile sector, corrosion protection and electronics electroplating are employed.
Electroless plating entails many simultaneous processes in an aqueous solution without the need for external electricity. Nickel plating is a popular type of electroless plating.
WHEN TO CHOOSE TUNGSTEN
Tungsten is a solid, shiny metal with remarkable toughness that finds widespread usage in industrial applications. It is very ductile and can be formed into fine wires despite its strength. In addition, tungsten has the highest melting point of any metal, at 6,170 degrees Fahrenheit, and is acid-resistant.
Despite its high melting point, tungsten develops a volatile oxide coating when heated to red heat, which is around 538 degrees. Therefore, to get the most benefit from tungsten’s other qualities, it must be coated with another material in high-heat applications.
Because of the reactive nature of refractory metals, it is impossible to suspend the workpiece in an aqueous bath when plating on tungsten. To complete the task right, you’ll need the help of a qualified and experienced metal finishing firm like SPC.
Plated tungsten is an excellent choice when you require a hefty metal with the highest heat resistance and conductivity. Plating onto tungsten is a multi-coat technique that begins with a rhodium layer. Following that, materials such as chromium, nickel, silicon, or precious metals can be used depending on the application requirements.
WHEN TO CHOOSE MOLYBDENUM
Only five other naturally occurring elements have a melting point higher than molybdenum, are silvery in colour and brittle in texture. Molybdenum, like tungsten, is categorised as heavy metal. However, it has a lower density. Nevertheless, some manufacturers favour molybdenum for specific applications because of its property.
Molybdenum has one of the greatest thermal conductivity ratings of any element, which is balanced by the lowest coefficient of thermal expansion of any element. Together with its high strength, these properties make it ideal for use in industrial motors and applications in the aerospace, electronic, electrical, and military and defence industries.
However, just like tungsten, molybdenum has its own set of problems. Because this metal is used in high-heat situations, it must be coated to ensure maximum corrosion resistance. In addition, plating onto molybdenum necessitates careful coating material applied to the substrate because of its reactivity. Fortunately, molybdenum is compatible with various coatings, including nickel, precious metals, glass, and chromium.
About Smart Microns
Since 1998, Smart Microns has been a leader in the electroplating sector, specialising in precious metal platings such as silver and gold for the electrical and electronics industries. Smart Microns has been researching and developing microns for over 22 years. Smart Microns’ parent company, Smart Creations, is based in Chennai, India, and was one of the first in the South Indian market to develop the revolutionary concept of electroplating and Electrophoretic lacquer, also known as ED lacquers. Micron electroplating services from Smart Microns comprise over seven metals in a variety of textured finishes.
As an ISO-certified company, we strive to provide the finest quality at the most reasonable price by leveraging technology to our mutual benefit. We have unique plating, cleaning, and polishing solutions for all types of plating, cleaning, and polishing requirements. In the domains of aerospace, industrial hardware, research, and energy, we collaborate with a number of well-known government and non-government organisations. Over 4800 Golden monuments to the Gods have been created using our 24kt Gold Plating service and the unique NTGD ( NanoTech Gold Deposition) technology.