Thermal Spray Coatings Applications

  • Thermal Spray Coatings are very useful in applications such as capacitors, insulators, resistors, and inductors.
  • Coatings of oxide ceramics (alumina, titanate, beryllia) are used as dielectrics, while metals, and alloys are used for current carrying and bonding to ceramic substrates, metals for electromagnetic shielding.
  • Alumina plasma-sprayed coatings are currently used in ozonizers. Alumina coatings with a thickness up to 1,000 μm and serving as dielectric are deposited together with the metal electrode on top of the glass tube in ozonizers.
  • Alumina is also used for high-temperature strain gages and insulation of induction heating coils.
  • For electrical heaters, arc-sprayed coatings are used, masking permitting to define the geometry.
  • Wire arc-sprayed coatings are used as shielding material to eliminate electromagnetic and radio frequency interference and dissipate static discharge sparks.
  • Thermal sprayed coatings are also used to produce thick films electrical circuits that can carry higher current than printed ones.