What is Ceramic-to-Metal Brazing?

Ceramic-to-metal brazing is a specialized joining technique that enables the formation of a strong, hermetic seal between ceramic and metal parts. It plays a critical role in ensuring vacuum integrity, thermal endurance, and long-term performance in extreme environments.

• Surface Preparation: Ceramics such as alumina are first metallized with molybdenum-manganese (Mo-Mn) or titanium to promote braze alloy wetting.
• Filler Alloys: Active brazing alloys, including titanium-based or precious metal alloys like Ag-Cu and Au-based fillers, provide robust bonds.
• Controlled Atmospheres: Brazing is conducted in vacuum or inert gas atmospheres to ensure oxidation-free bonding and maximum joint reliability.
• End Applications: Common in aerospace sensors, medical implants, power electronics, vacuum windows, and high-voltage insulators.