You are here : Home > When it comes to materials, opposites can attract!

News | Materials


When it comes to materials, opposites can attract!

​Liten, a CEA Tech institute, possesses unrivalled know-how in diffusion welding that manufacturing companies and other research labs can use to further their development work.

Published on 9 February 2016

Liten possesses unrivalled know-how assembling materials deemed impossible to assemble, with two decades of experience in diffusion welding, a solid-state welding process that leverages the diffusion of atoms between two materials to create a joint. The process entails applying high temperature and pressure to the two parts to be assembled. This can be done simultaneously or not, according to a predetermined cycle. Liten’s researchers know how to adjust the process for each unique combination of materials, verify the process using models, scale up the process for use in industrial settings, and transfer the process to partners.

Liten researchers were asked by their colleagues working on the ITER reactor project to assemble a complex part from basic tungsten and copper components—the two metals are impossible to weld together using traditional techniques. To create the joint between the two metals, the researchers used an intermediary material chosen for its capacity to control the underlying diffusion mechanisms. They also determined the best process for assembling the particularly complex part, which contained tubes and several other internal components made from other metals.

This unrivalled know-how can help drive advances in the aerospace, nuclear, glass, plastics, chemical (reactors), new energy technology, energy-efficiency (heat exchangers), and other industries.


Top page

Top page