TY - GEN
T1 - Chemical composition optimisation of perovskite coatings by suspension plasma spraying for SOFC cathodes
AU - Monterrubio-Badillo, C.
AU - Ageorges, H.
AU - Chartier, T.
AU - Coudert, J. F.
AU - Fauchais, P.
PY - 2004
Y1 - 2004
N2 - The purpose of this work is to optimise the chemical composition of perovskite coatings prepared by injecting a suspension of submicrometric LaMnO3 perovskite particles (d50 = ~ 1 μm) in a direct current (d.c.) plasma jet. The perovskite powder composition, the particle size and the plasma parameters were modified in order to diminish the manganese evaporation. The process consists in mechanically injecting a well dispersed stable suspension of submicrometric perovskite particles in a dc plasma jet. In the process, large suspension droplets (~300 μm) are sheared into tiny ones (a few μm) by the plasma jet flow. Then the solvent is evaporated and the particles melt resulting in perovskite droplets of about 1 μm impacting on the substrate, the coating resulting from their layering. Such coatings are to be used as cathodes for the SOFCs (Solid Oxide Fuel Cells). Best results were obtained by injecting a stable suspension containing a 10 mol% MnO2 doped perovskite powder with 3 μm particle size in an Ar plasma forming gas and 300 A of current intensity.
AB - The purpose of this work is to optimise the chemical composition of perovskite coatings prepared by injecting a suspension of submicrometric LaMnO3 perovskite particles (d50 = ~ 1 μm) in a direct current (d.c.) plasma jet. The perovskite powder composition, the particle size and the plasma parameters were modified in order to diminish the manganese evaporation. The process consists in mechanically injecting a well dispersed stable suspension of submicrometric perovskite particles in a dc plasma jet. In the process, large suspension droplets (~300 μm) are sheared into tiny ones (a few μm) by the plasma jet flow. Then the solvent is evaporated and the particles melt resulting in perovskite droplets of about 1 μm impacting on the substrate, the coating resulting from their layering. Such coatings are to be used as cathodes for the SOFCs (Solid Oxide Fuel Cells). Best results were obtained by injecting a stable suspension containing a 10 mol% MnO2 doped perovskite powder with 3 μm particle size in an Ar plasma forming gas and 300 A of current intensity.
UR - http://www.scopus.com/inward/record.url?scp=10444239319&partnerID=8YFLogxK
M3 - Contribución a la conferencia
AN - SCOPUS:10444239319
SN - 0871708094
T3 - Proceedings of the International Thermal Spray Conference
SP - 562
EP - 567
BT - Proceedings of the International Thermal Spray Conference
T2 - Proceedings of the International Thermal Spray Conference
Y2 - 10 May 2004 through 12 May 2004
ER -