Abstract
Diffusion bonding of ceramics to ceramics and to metals is reviewed, with primary emphasis on the effects of operational variables on joint strength. 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. The mechanisms involved, i.e. plastic deformation, various forms of diffusion and power law creep, imply that temperature is the most important process parameter. Finally, a survey of variables employed in bonding of different ceramic-metal and ceramic-ceramic joints is included as a guideline for selection of materials and parameters.
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