Dense tubular self-supporting La0.7Ca0.3Fe0.85 Co0.15O3-δperovskite membranes were prepared by thermoplastic extrusion. The rheological behavior of the ceramic mixture was studied. Non-deformed tubes of 10 and 5mm diameter and 0.3- 0.8mm wall thickness could be extruded. After sintering at 1100°C, the membranes reached a relative density of over 98% with an average grain size of =.25μm. Flexural strenght, elastic modulus, and fracture toughness of sintered perovskite ceramics were determined on test bars prepared by injection molding from a thermoplastic mixture identical to that used for extrusion. The room-temperature flexural strenght reached 215 MPa in fourpoint bending, and the fracture toughness was 1.6 MPa•m0.5
Véronique Michaud, Vincent Werlen, Christian Rytka
Marianne Liebi, Manuel Guizar Sicairos
François Maréchal, Véronique Michaud, Yves Leterrier, Harm-Anton Klok, Jeremy Luterbacher, Maxime Alexandre Clément Hedou, Adrien Julien Demongeot, Graham Reid Dick, Christèle Rayroud, Thibault Rambert