While many people think of precious metals in terms of their value, such as gold, silver or platinum, the vast majority of all of these metals are used in industry.
Their properties make them a valuable coating for base metals and other materials, including polymers (plastics), ceramics and just about all other types of organic as well as inorganic materials. The precious metal alloys can be applied in an extremely thin layer to the surface, increasing corrosion resistances, enhancing the ability to lubricate the surface or increase the heat resistance of the component.
Essential Alloys
Through combinations of precious metal alloys , multiple advantages can be achieved with the surface coating. By combining these alloys in one thin layer the costs can be reduced to the process without any loss of the benefits of each of the unique alloys. It is also possible to have a synergistic effect that enhances specific properties.
- Gold – while not the most valuable of the precious metals, gold is highly malleable and durable as well as resistant to many chemicals and reactions. It is also highly conductive so is often used in electronic components.
- Platinum – highly corrosion resistant as well as malleable, platinum is considered an ideal precious metal in dentistry as well as in the military and defense industry. It is very resistant to exposure to most chemicals and elements, including hydrogen, so it can be used in a wide variety of industrial settings.
- Ruthenium – this is similar to platinum and can be used to increase the surface hardness of a base metal. It is often used with platinum for this purpose as well as to increase resistance to corrosion and reactions.
- Silver – in addition to having very good thermal and electrical conductivity, silver can also be used to limit the growth of bacteria and mold, making it an important coating for medical and dental components.
There are many other precious metal alloys that can be used in their pure form or in combinations. Working with a company focusing on the development of thin film metals and alloys will provide you with information needed to make the right selection.