Can a vacuum brazing furnace be used for ceramic brazing?

03-26-2025       Author: KJ technology

Vacuum brazing furnace can be used for ceramic brazing. The application of vacuum brazing furnace in the field of connecting ceramics and metal materials can effectively solve the problems that traditional welding methods are difficult to overcome. It can organically combine ceramics and metals to form composite components that have the advantages of both ceramics and metals.

Specifically, vacuum brazing furnaces can use brazing materials containing active elements such as Ti or Zr to directly brazing materials such as ceramics to metals, ceramics to ceramics, ceramics to graphite, etc. This method can solve the connection problem of parts that cannot be fully metalized due to blind holes or geometric size factors, greatly simplifying the brazing process and meeting the requirements for high-temperature use of ceramic components.

For example, in the production of heat exchangers and infrared radiation sources, alumina ceramics are often brazed together with alkali corrosion-resistant metals Ta, Nb, and alloys. The brazing process uses plasma spraying equipment to spray a layer of tungsten or molybdenum on the surface of alumina ceramics, and then applies the prepared mixed brazing material to the bonding surface between ceramics and metals. It is then loaded into a vacuum furnace for brazing, which can obtain dense and high tensile strength brazing joints, and the joint has good corrosion resistance and can withstand high temperature environments.