Conventional methods are only able to liquefy tungsten powder and spray it onto the work piece. The impact of the individual droplets striking the piece results in a very rough surface. But the plasma generators which Dr. Laure Plasmatechnologie GmbH uses evaporate tungsten powder, thus yielding smooth, reflective coats of tungsten deposited on a wide range of substrates.
With a melting point of 3,422° C, the layers of tungsten are highly resistant to high heat loads. They are also suitable for protecting components from many different environmental effects, such as chemical attack and/or wear.
These layers of tungsten can also be used as the basis for tough tungsten carbide coatings, tungsten boride coatings or reflectors for solar absorbers, which operate at high temperatures.
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Video for tungsten coating
Metallic coatings can be used to protect and refine components in many different ways.
Dr. Laure Plasmatechnologie GmbH has years of experience in methods for depositing metallic layers on a wide range of surfaces and components.
The extremely high temperatures in our arc plasma generators are capable of evaporating any metal – even tungsten, which has a boiling point of 5660° C.
We have successfully applied coatings with the following materials to date:
Boron, aluminium, silicon, titanium, chromium, iron, nickel, copper, zinc, germanium, selenium, yttrium, zirconium, molybdenum, palladium, silver, cadmium, indium, tin, tellurium, tantalum, tungsten, iridium and gold, as well as various alloys of these metals.