Ceramic Diffusion Bonding

Diffusion bonding of ceramics to ceramics and to metals is reviewed with primary emphasis on the effects of operational variables on joint strength.

Ceramic diffusion bonding.

This technique can similarly be used when joining ceramics to metals. The process is dependent on a number of parameters in particular time applied pressure bonding temperature and method of heat application. Diffusion bonding or diffusion welding is a solid state welding technique used in metalworking capable of joining similar and dissimilar metals. Diffusion bonding of ceramic materials is usually a direct joining method that accomplishes joining between two often like materials through atomic level mass transport and exchange.

In addition a number of ceramic materials al2o3 ni3al si3n4 sialon tic wc and zro2 were bonded to 304 and 316 stainless steel using diffusion bonding or tlp bonding. Diffusion bonding is a solid state joining process capable of joining a wide range of metal and ceramic combinations to produce both small and large components. These include principal bonding parameters such as temperature time and pressure. Direct diffusion bonding of ceramic to ceramic would be slow.

However the process can be facilitated by interposing a metallic or glassy interlayer between the two substrates.