Micro extrusion of innovative alumina pastes based on aqueous solvent and eco-friendly binder

The manufacturing of alumina networks is achieved by using the micro-extrusion shaping process consisting of an XYZ displacement platform and a homemade extrusion head. The nozzle diameter is equal to 400 μm. The rheological behavior of the paste is studied as well as its capability to be extruded. The green parts are consolidated by heat treatment at 1600 °C. Their microstructural characteristics have been studied. Final density equal to 98% has been obtained.