H. AGEORGES, SPCTS - UMR CNRS 6638, Faculty of Sciences, Limoges cedex, France; C. Horion, R. Salas, V. Rat, J. F. Coudert, P. Fauchais, University of Limoges, Limoges, France
The study consists in manufacturing strontium doped lanthanum manganite coatings, with a perovskite structure in order to use them as the cathode material for Solid Oxide Fuel Cell (S.O.F.C.). Plasma spraying at atmospheric pressure was achieved with mechanically injected suspensions. The La0.8Sr0.2MnO3 particles in the µm size range were dispersed in ethanol solvent and Beycostat was used as stabilizer. Coatings were sprayed by using an argon plasma-forming gas injected in a 6 mm i.d. nozzle with 300A current intensity. The coatings obtained were porous with 70µm thick. The crystalline phases in coatings were the same that of the ones observed in the raw powder but weak peaks of La2O3 due to a partial decomposition of the feedstock powder in the plasma jet also showed-up.
Summary: Plasma sprayed strontium doped lanthanum manganite coatings to use them as the cathode material for S.O.F.C.
