Ceramic Diffusion Bonding

It operates on the principle of solid state diffusion wherein the atoms of two solid metallic surfaces intersperse themselves over time.

Ceramic diffusion bonding.

The mechanism is solid state diffusion or more properly inter diffusion. 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. This technique can similarly be used when joining ceramics to metals. These include principal bonding parameters such as temperature time and pressure.

However the process can be facilitated by interposing a metallic or glassy interlayer between the two substrates. Diffusion bonding of ceramics to ceramics and to metals is reviewed with primary emphasis on the effects of operational variables on joint strength. 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 or diffusion welding is a solid state welding technique used in metalworking capable of joining similar and dissimilar metals.

Direct diffusion bonding of ceramic to ceramic would be slow.