Can electric heating vacuum brazing furnace brazing ceramics?

04-02-2025       Author: KJ technology

Electric heating vacuum brazing furnace can brazing ceramics. Vacuum brazing is widely used in the field of connecting ceramics and metal materials, which can effectively solve the connection problems caused by the large differences in physical and chemical properties between ceramics and metals.

Advantages of vacuum brazed ceramics

Avoid oxidation: Brazing in a vacuum environment can effectively eliminate the harmful effects of air on the workpiece and prevent oxidation of ceramics and metals during the welding process.

High quality joints: The brazed joints are bright and dense, with good mechanical properties and corrosion resistance, and can meet the requirements of various complex working conditions.

Wide applicability: Vacuum brazing is not only suitable for the connection between ceramics and metals, but also for the connection between ceramics, ceramics, graphite and other materials.

Process characteristics of vacuum brazing ceramics

Metalization pretreatment: For certain ceramic materials, metallization pretreatment may be necessary to improve the wettability and weldability of the ceramic surface.

Choose the appropriate brazing material: Select the appropriate brazing material for welding based on the type and performance requirements of ceramics and metals. For example, brazing materials containing active elements such as Ti or Zr are commonly used for direct brazing of ceramics and metals.

Accurate control of process parameters: During the vacuum brazing process, it is necessary to precisely control process parameters such as temperature, holding time, and vacuum degree to ensure welding quality.

Practical application cases

Composite components of ceramics and metals have been widely used in fields such as aerospace, electronic power, and energy transportation. For example, aluminum oxide ceramics can be brazed together with alkali resistant and corrosion-resistant metals Ta, Nb, and alloys using vacuum brazing technology for manufacturing components such as heat exchangers and infrared radiation sources. In addition, there are numerous research and application cases on vacuum brazing processes between ceramics and stainless steel, ceramics and aluminum alloys, etc.