Ceramic-to-Kovar Brazing Assemblies
Ceramic-to-Kovar brazing is widely considered when the assembly requires ceramic insulation together with a metal whose thermal expansion characteristics are compatible with many ceramic systems. Proper joint design remains essential for reducing thermal stress during brazing and thermal cycling.
Key Features
- Reliable ceramic-to-Kovar joining
- Good dimensional stability
- Hermetic sealing capability
- Excellent electrical insulation
- Suitable for precision assemblies
Materials
Typical ceramic materials include alumina , while Kovar alloy is selected for applications requiring controlled thermal expansion behavior.
Brazing Method
Depending on the ceramic surface and design, metallized brazing can be selected. Joint clearance, filler alloy, heating profile, and cooling rate are controlled to achieve a stable connection.
Applications
Common applications include hermetic electronic packages, vacuum feedthroughs, high-voltage components, sensors, semiconductor equipment, and aerospace electronics.
Have a ceramic-to-Kovar assembly that requires hermetic sealing? Send your material specifications and drawing for a preliminary joint-design assessment.
