Fabrication of Mnsub(1.5)Cosub(1.5)Osub(4) by electrostatic spray deposition for application as protective coating on alloy interconnects for solid oxide fuel cells
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A Mn1.5Co1.5O4 (MCO) protective coating was deposited by
Electrostatic Spray Deposition on the SS446 alloy used as
interconnects in Solid Oxide Fuel Cells. The main purpose of this
work was to verify the feasibility this technique to inhibit the Cr
volatilization and the subsequent SOFC cathode poisoning. Phase
crystallization was obtained by thermal annealing at 800 °C in air,
after deposition. The corrosion resistance behavior of the uncoated
and coated steels was investigated by electric and
thermogravimetric measurements. The coated films, 400 nm thick,
were found efficient in reducing the oxidation rate, by limiting the
outward Cr3+ diffusion. The area specific resistance of the coated
SS446 alloy was found to be much lower (6.7 mΩ.cm2
) and more
stable as compared to the uncoated one (80 mΩ.cm2
), after
oxidation for 200 h at 800 °C in ambient air. These results
evidence the good performance of the deposition technique for
fabricating thin, crack free and dense conductive Mn1.5Co1.5O4
coatings on ferritic alloys.
Como referenciar
CONCEICAO, LEANDRO da; DJURADO, ELISABETH; DESSEMOND, LAURENT; MUCCILLO, E.N.S. Fabrication of Mnsub(1.5)Cosub(1.5)Osub(4) by electrostatic spray deposition for application as protective coating on alloy interconnects for solid oxide fuel cells. ECS Transactions, v. 68, n. 1, p. 1609-1616, 2015. DOI: 10.1149/06801.1609ecst. Disponível em: http://repositorio.ipen.br/handle/123456789/25366. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.