Tungsten, molybdenum and tantalum for evaporation coils

This content has been provided by Plansee.

One part of the Physical Vapour Deposition (PVD) process is the thermal evaporation (resistance evaporation) coating method. The material intended to form the subsequent layer is heated in a vacuum chamber until evaporation. The thus formed vapour condenses on the substrate and forms the required material layer.

Plansee’s evaporation coils know how to turn up the heat: with their very high melting points, basically, any material can be brought to the boil by these resistance heaters. In addition, substrate contamination is inhibited by the excellent corrosion resistance and the outstanding purity of the material.

Plansee manufactures evaporation coils from the following materials:

  • Tantalum
  • Molybdenum
  • Molybdenum-lanthanum (ML) for increased service lives 
  • Grain stabilised tungsten (WVM) for the evaporation of aluminium

*Plansee also supplies evaporation coils customised according to specific customer demands.


Article by Plansee

Plansee is entirely focused on producing, processing and marketing refractory metals such as tungsten, tantalum and molybdenum. These are the most heat-resistant metals. With their high melting point, they are suitable for use as heaters in high-temperature furnaces or as incandescent filaments in lamps. In electrical switch contacts, they are valuable because of their excellent electrical and thermal conductivity. In electrically conductive film in flat screens and solar cells, our alloys are remarkable for their low coefficient thermal of expansion. In this way, they bring astonishingly sharp image quality to our living rooms and provide us with clean energy.