Efficient Diffusion Bonding of Large Scale Parts

Worldwide there is a trend to use diffusion bonding for more and more applications, for example for large scale micro channel heat exchangers and heat sinks. For large scaled parts there is only a limited range of systems commercially available today. One most important criterion for large scale diffusion bonding is a homogeneous load distribution. To achieve this, different concepts can be used, e.g. multiple supports around pressing plates or using very thick pressing plates. In the presentation an overview of bonded examples, made of different materials, is given as well as a detailed description of the used diffusion bonding systems. In addition, the methods for characterization of the systems and bonded parts are included as well.