AMB ceramic-metal brazing method

• Main Author: LI MINGJIAN
• Format: Patent
• Language: Chinese; English
• Published: 21.01.2022
• Subjects: CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MACHINE TOOLS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; PRINTED CIRCUITS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The invention belongs to the technical field of ceramic-metal composite material manufacturing, and particularly relates to an AMB ceramic-metal brazing method based on a cold spraying process. The AMB ceramic-metal brazing method comprises the following steps that ultrasonic cleaning, drying and sand blasting treatment is conducted on a ceramic substrate; active brazing filler metal powder is sprayed on the ceramic substrate with inert gas as a medium to form a brazing filler metal coating with a certain thickness; the active brazing filler metal coating on the ceramic substrate is machined into the required thickness through a grinding machine; and clean oxygen-free copper foil is clamped on the composite substrate, the active brazing filler metal coating is located between the oxygen-free copper foil and the ceramic substrate, the composite substrate is placed in a vacuum brazing furnace to be subjected to high-temperature brazing, and sufficient brazing fusion among the ceramic substrate, the active brazi