DESCRIPTION
The activity of studying membrane-metal junctions was first focused on automating the deposition process of the glass splicing layer in order to achieve a junction with controlled thickness and morphology. The robocasting technique was chosen as the solution for making junctions in a controlled and reproducible manner. In addition to this, junction tests using commercial glass-ceramic confirmed that minimizing the differences in dilatometric behavior between the spliced layers is crucial to ensure the integrity of the sealant layer. A thermomechanical model confirmed that the observed cracks were due to stresses caused by differential thermal expansion. The junction made by coupling the ceramic and metal with the lowest CTE, 70CGO-30LSCF and ODS steel, respectively, showed a clear improvement in the microstructure of the glass-ceramic.

APPLICATIONS
Test results on metal-ceramic junctions find application in research aimed at using industrial thermal waste for energy-efficient production of oxygen in industrial processes.

USERS
Industrial operators with high temperature processes

FOCUS
F. Drago, P. Fedeli, A. Cavaliere, A. Cammi, S. Passoni, R. Mereu, S. De La Pierre, F. Smeacetto, M. Ferraris – Development of a membrane module prototype for oxygen separation in industrial applications – MDPI Membranes, Vol. 12, Issue 2 – January 2022