RUBENS CHIBA
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Artigo IPEN-doc 20583 Obtaining of the nuclear grade zirconium tetrachloride by the chlorination process2014 - CHIBA, RUBENS; MENEZES, ELIENE G.R.; ANDREOLI, MARCO; SEO, EMILIA S.M.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.Resumo IPEN-doc 14792 Conformacao de filmes ceramicos de LSM/YSZ e LSM pela tecnica de puverizacao de po umido2009 - CHIBA, RUBENS; VARGAS, REINALDO A.; ANDREOLI, MARCO; SEO, EMILIA S.M.Resumo IPEN-doc 14429 Materiais catodicos para ITSOFC's: sintyese e caracterizaco de Ndsub(1-x)Srsub(x)COsub(1-'gama')Osub(3-'alfga')2007 - VARGAS, REINALDO A.; CHIBA, RUBENS; ANDREOLI, MARCO; SEO, EMILIA S.M.Resumo IPEN-doc 14414 Estudo da estabilidade do composto menganito de lantanio dopado com estroncio2007 - CHIBA, RUBENS; VARGAS, REINALDO A.; ANDREOLI, MARCO; SEO, EMILIA S.M.Resumo IPEN-doc 10128 Synthesis and characterization of NiO-8YSZ powders by coprecipitation route2003 - CHIBA, R.; LIMA, N.B.; SEO, E.S.M.Resumo IPEN-doc 15693 Characteristics of strontium-doped neodymium manganite obtained by the standard ceramic technique2010 - VARGAS, REINALDO A.; CHIBA, RUBENS; SEO, EMILIA S.M.; ANDREOLI, MARCOResumo IPEN-doc 15689 Strontium-doped lanthanum manganite2010 - CHIBA, RUBENS; VARGAS, REINALDO A.; SEO, EMILIA S.M.; ANDREOLI, MARCOThe La1-xSrxMnO3 - LSM deposited in the form of thin films on a ZrO2/Y2O3 - YSZ substrate is an cathode of solid oxide fuel cells - SOFC. In this work, the LSM was synthesized by the citrate technique and the cathode layer was deposited by wet powder spraying. X-ray fluorescence spectroscopic analysis showed that the synthesis was efficient to obtain powders with x = 0.22 mol%. Scanning electron micrographs showed that the particles were in the form of agglomerates less than 1 µm and this was verified by phase analysis light scattering granulometry (0.50 µm). The diffractograms revealed that the main phase in LSM powders had a hexagonal crystalline structure. Thin LSM film also had the hexagonal crystalline structure. The micrograph of the LSM film also revealed a porous microstructure with thickness of 30 µm. The presence of La, Sr and Mn in the film was confirmed by energy dispersive x-ray spectroscopy. The conditions used to synthesize LSM resulted in adequate product characteristics for deposition. The wet powder spraying technique enabled the manufacture of adherent porous thin film of LSM on dense YSZ substrate.Resumo IPEN-doc 15685 Aplicacao do metodo de Rietveld nos pos compositos de manganito de lantanio dopado com estroncio e zirconia estabilizada com itria2010 - CHIBA, RUBENS; VARGAS, REINALDO A.; ANDREOLI, MARCO; MARTINEZ, LUIS G.; SEO, EMILIA S.M.Resumo IPEN-doc 18418 Filme cerâmico de manganito de lantânio dopado com estrôncio e zircônia estabilizada com ítria utilizado como catodo compósito em células a combustível de óxido sólido de temperatura alta2012 - CHIBA, R.; VARGAS, R.A.; ANDREOLI, M.; SEO, E.S.M.