| Full text | |
| Author(s): |
da Conceicao, Leandro
;
Lay, Sabine
;
Robaut, Florence
;
Renou, Gilles
;
Muccillo, E. N. S.
;
Djurado, Elisabeth
Total Authors: 6
|
| Document type: | Journal article |
| Source: | FUNCTIONAL MATERIALS LETTERS; v. 10, n. 3 JUN 2017. |
| Web of Science Citations: | 0 |
| Abstract | |
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 |