Ceramic Diffusion Bonding

Diffusion bonding or diffusion welding is a solid state welding technique used in metalworking capable of joining similar and dissimilar metals.

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 is a solid state joining process capable of joining a wide range of metal and ceramic combinations to produce both small and large components. 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.

These include principal bonding parameters such as temperature time and pressure. In addition the influence of atmosphere mismatch in coefficient of thermal expansion between the joint members interlayers and surface structure are discussed. Direct diffusion bonding of ceramic to ceramic would be slow. The mechanism is solid state diffusion or more properly inter diffusion.

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