Dielectric technical ceramics we metallize: 94-99% aluminas, zirconia-toughened alumina (ZTA), yttria-stabilized zirconia, and sapphire

Metallization & Brazing for Technical Ceramics

High-voltage assemblies require the careful selection of metallizing paints, since ceramic surface charges can develop to high enough levels that air molecules will ionize and create arc discharge. When used in a vacuum, electric fields can be even greater, since there are no nearby gases to ionize. At voltages greater than 50KV, it is possible to generate electrons from alumina via secondary electron emission, creating surface plasma. A poorly designed metal joint can cause complete part failure due to the forces of plasma discharge. Elcon manufactures custom paints with a 25-year history of reliability in high-voltage applications.  Our engineering team works closely with customers on joint design and choosing the right metallization paint, braze alloy, and metal. We partner with reliable, high-quality suppliers for ceramic components and source all our raw ceramics from qualified suppliers. Where required, we use DFARS compliant ceramics and metal components.

The Advantages

  • Dissipation of electrical energy in a controlled manner
  • Resistance against gas- and fluid-based corrosion
  • Ability to hold off high voltages to prevent arcs and improve safety
  • Wide range of temperature stability
  • Low loss factor for RF applications
  • Ability to withstand abrasive wear

Our Capabilities

  • Production of electronic packages and assemblies using dielectric technical ceramics, including 94-99% aluminas, zirconia-toughened alumina (ZTA), yttria-stabilized zirconia, and sapphire
  • Screenprinted metallization cicuitry
  • High-strength hermetic assemblies
  • Manual, robotic, spray and screenprint application techniques
  • Protective glazing of certain alumina


  • Feedthroughs
  • Lasers
  • Medical devices
  • Photonics
  • Undersea power connectors
  • Aerospace and defense field replaceable components

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Our team is here and ready to start talking, whatever your application may be. Request a quote today to send us your thoughts and get your project moving.


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