Vacuum Brazing is a joining process whereby a filler metal is heated to its melting temperature above 450C and distributed between two or more base materials by capillary action while protected by an oxygen free (vacuum) atmosphere.

SRI Hermetics has several vacuum brazing stations that are used for joining metal-to-metal as well as metal-to-ceramic. The primary advantages of vacuum brazing over conventional brazing is the high density, oxide free joints that are created between the parent materials and the ability to bond materials that cannot be bonded using other brazing processes.

The design of sophisticated hermetic assemblies often requires the combination of many different materials to achieve desired performance characteristics of the assembly. SRI Hermetics’ design engineers use vacuum brazing as one of their fundamental methods to join some of these different materials.