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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Transmission electron microscopy characterization of protective La0.7Sr0.3MnO3-delta coatings prepared by electrostatic spray deposition on ferritic alloy

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da Conceicao, Leandro ; Lay, Sabine ; Robaut, Florence ; Renou, Gilles ; Muccillo, E. N. S. ; Djurado, Elisabeth
Total Authors: 6
Document type: Journal article
Web of Science Citations: 0

The effect of La0:7Sr0:3MnO3-delta (LSM) coating on SS446 steel on air oxidation at 800 degrees C was investigated by transmission electron microscopy. Dense and crack free thin LSM films were prepared by electrostatic spray deposition. The microstructural characterization was carried out on coated and uncoated interconnectors. A thin chromia scale at the alloy interface along with two spinel phases were observed after long term oxidation in both cases. Specimens exhibit, in addition, an SiO2 layer at the interface with steel due to the high content of Si in the steel. Significant changes in the thickness, morphology and composition occurred in the reaction layer for the LSM coated steel. These effects are explained on the basis of changes in the diffusive fluxes during exposure to the oxidation treatment. The implications of these effects for the degradation mechanism of LSM-based interconnects are discussed. (AU)

FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 12/07648-3 - La0,7Sr0,3MnO3δ films deposited by electrostatic spray on Fe-Cr alloy applied as interconnect of solid oxide fuel cell (SOFC)
Grantee:Leandro da Conceicao
Support Opportunities: Scholarships abroad - Research Internship - Post-doctor