Electrical Engineering Ceramics

Ceramic-to-metal Assemblies

FRIATEC produces a wide variety of brazed metal-ceramic seals using FRIALIT-DEGUSSIT oxide ceramics. They feature a number of outstanding properties: they ensure maximum electrical insulation, are fully leak-tight even under extreme pressure and vacuum, highly corrosion-resistant and withstand temperatures from -271 °C to more than 450°C.


High temperature brazing is one of the most widely used methods to ensure that the assembly is resistant to corrosion, high temperatures and mechanical stress. Ceramic-to-metal brazing is used to join a technical ceramic part to a metal component by means of a brazing alloy or pure metal in the form of a strip or wire at a temperature of approximately 800°C. In order to obtain an efficient brazing, it is necessary to choose the materials mainly according to their expansion coefficient. We use 99.7% pure alumina and usually an AgCu28 brazing alloy (eutectic).

Ceramic-metal assemblies:
We offer a wide range of technical ceramics, including standard and custom ceramic-to-metal brazed assemblies. Composed of pure alumina and metals (Titanium, Stainless Steel, Copper, FeNiCo), our ceramic-metal brazed assemblies ensure optimal electrical insulation and are perfectly sealed under ultra-high vacuum and even under pressure up to several thousand bars. These ceramic-to-metal brazed joints can withstand temperatures ranging from -271°C to 450°C or more, depending on the brazing materials used. We naturally help our customers to design the brazed components.

Typical application areas for ceramic-to-metal components:

  • High voltage
  • High current
  • Sensors and Measuring devices
  • High-vacuum technology
  • Cryogenic applications
  • Medical technology
  • Radiation therapy
  • High-frequency technology
  • Power engineering

Consult our standard product range or contact us to order customized components for any specific application.  

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