EMILIA SATOSHI MIYAMARU SEO
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Artigo IPEN-doc 23902 Corn leaf fibers preparation and characterization for composite obtention2017 - MOREIRA, T.M.; SEO, E.S.M.There is a global trend in seeking plant fibers to replace the synthetic fibers to obtain reinforced composites, aiming the use of renewable resources. In this context, this paper objective is to develop the process of corn leaf fibers preparations , characterize and adapt them for applications in the construction industry. Corn leaves were dried in room temperature, treated by mercerising (chemical process of attack on the fiber surface making it rough); then neutralized with acid solution and washed in running water. The characterization of the corn leaf fibers was performed by X-ray diffraction, X-ray fluorescence Spectrometry, Scanning Electron Microscopy, Thermogravimetry, specific mass and Fourier Transform Infrared Spectrometry. The mercerizing treatment was effective, because the corn fibers have similar characteristics to synthetic fibers, leading to a possibility of new technological uses, besides the application in gas pipe manufacturing.Artigo IPEN-doc 20195 Characterization of metallic zirconium sponge2015 - LIMA, SERGIO C.N. de; SOARES, EDSON P.; ANDREOLI, MARCO; CHIBA, RUBENS; SEO, EMILIA S.M.Artigo IPEN-doc 20130 Physical and microstructural characterization of cathode composite cathode and electrolyte ceramics to ITSOFC2014 - VARGAS, REINALDO A.; BONTURIM, EVERTON; ANDREOLI, MARCO; CHIBA, RUBENS; SEO, EMILIA S.M.The (La0.60Sr0.40)(Co0.20Fe0.80)O3-δ - LSCF, (Ce0.90Gd0.10)O1.95 - CGO composites and LSCF were deposited by wet powder spraying deposition method for the purpose of investigating their potential use in Intermediate Temperature Solid Oxide Fuel Cells. The interlayers are necessary between CGO electrolytes and LSCF cathodes in order to improve the performance of these materials. LSCF powders synthesized by citrate technique were calcined at 900 °C for 4 h and, their LSCFCGO composites and LSCF suspensions deposited on CGO substrate and, sintered in 1100 °C for 1 h, were formed pseudo-perovskite. The ceramics materials were analyzed by X-ray diffraction (XRD) and chemical composition of different half-cells layers by scanning electron microscope with energy dispersive (SEM-EDS). The results are in agreement with the literature and indicate that route studied is adequate for crystal structures formation compatible with films the 35 µm thick total for study of conductivity between the cathode and the electrolyte.Artigo IPEN-doc 09266 Properties of Sr-doped lanthanum manganites for SOFC2003 - SEO, E.S.M.; COUTO, A.A.; LIMA, N.B.; KOEHLER, A.C.; SOARES, E.P.Artigo IPEN-doc 11884 Solid oxide fuel cells: strontium lanthanum manganite obtained by the citrate technique2006 - CHIBA, RUBENS; SEO, EMILIA S.M.; VARGAS, REINALDO A.; ANDREOLI, MARCOArtigo IPEN-doc 13140 Deposition of strontium-doped lanthanum manganite suspensions by Wet Powder Spraying2008 - CHIBA, RUBENS; VARGAS, REINALDO A.; ANDREOLI, MARCO; SEO, EMILIA S.M.Artigo IPEN-doc 15663 Characterization of proton exchange membrane fuel cell cathode catalysts prepared by alcohol-reduction process2010 - SANTORO, T.A.B.; OLIVEIRA NETO, A.; CHIBA, R.; SEO, E.S.M.; FRANCO, E.G.Artigo IPEN-doc 15711 Strontium dopant concentrations influence on Ndsub(1-x)Srsub(2)MnOsub(3+'gamma') structural and electrical conductivity2010 - VARGAS, REINALDO A.; CHIBA, RUBENS; ANDREOLI, MARCO; SANTORO, THAIS A. de B.; SEO, EMILIA S.M.Artigo IPEN-doc 15712 Crystalline structure and microstructural characteristics of the cathode/electrolyte solid oxide half-cells2010 - CHIBA, RUBENS; VARGAS, REINALDO A.; ANDREOLI, MARCO; SANTORO, THAIS A. de B.; SEO, EMILIA S.M.Artigo IPEN-doc 15715 Strontium-doped neodymium manganite powders obtained by the solids mixture technique2010 - VARGAS, REINALDO A.; CHIBA, RUBENS; ANDREOLI, MARCO; SEO, EMILIA S.M.