Alumina–copper joining by the sintered metal powder process

Brazing copper and alumina metallized with Ti-containing Sn0.3Ag0.7Cu metal powder

“…Brazing, as the most feasible and economical method, has received special attention in joining of alumina and copper. In the conventional brazing of alumina, the nickel-plated alumina is brazed after it has been metallized by the molybdenum-manganese method that metallizes the ceramic surfaces by coating it with a mixture of molybdenum and manganese powders, followed by a sintering treatment at high temperature more than 1300°C [7]. Furthermore, the active brazing method has been also applied in brazing alumina [8][9][10].…”

Microstructure Evolution of Alumina/Alumina Joint Bonded by Boron Oxide–Alumina Nonmetal Powder Interlayer

“…Brazing or diffusion bonding is usually utilized to realize joining of ceramics. The conventional sintered metal powder process is a useful way to metalize the surface of the alumina and improve its activity. But this method is expensive and complicated.…”

“…With the help of metal interlayer such as CuTi, CuZr, and AgCuTi, the alumina can be joined successfully to itself or metals. However, residual stress tends to generate in the joint due to the mismatch of the coefficient of thermal expansion between ceramic and AgCuTi, which severely degrades the quality of the joint. Thus, nonmetal interlayer needs to be developed to join ceramics to avoid the generation of the residual stress.…”

Characterization of Al/Ti Nano Multilayer as a Jointing Material at the Interface between Cu and Al₂O₃

“…During the last decade, researchers have implemented a wide range of methods in ceramic-metal joining. However, due to different physical/chemical properties in the physical and chemical structures of ceramics and metals, only a few methods appear to be feasible for application 2) . As a novel method, the application of nano multilayer seems to be one of the most suitable methods for diffusion bonding.…”