2008
Claudia Alicia Cortes Escobedo, Juan Muñoz-Saldaña, Ana M Bolarín Miró, Felix Sanchez de Jesús, Determination of strontium and lanthanum zirconates in YPSZLSM mixtures for SOFC, Journal of Power Sources, Elsevier, 180 (1),pp. 209-214 (2008) ISSN: 0378-7753 doi: :10.1016/j.jpowsour.2008.01.067, Elsevier B.V.
Abstract
Mixtures of 3% yttria- and partially-stabilized zirconia with LSMx (strontium-doped lanthanum manganite, x = 0, 0.15 and 0.2) were prepared and heat treated at temperatures between 1000 and 1300 C to recreate the cathodeelectrolyte interface interactions taking place during preparation and operation of solid oxide fuel cells (SOFC). Such interactions include the formation of La2Zr2O7 and SrZrO3, which are undesirable for SOFC. The effect of the manganese oxidation number on the mechanosynthesis of LSM during zirconate formation is also discussed. A quantitative analysis of zirconate formation by X-ray diffraction and Rietveld refinement was undertaken. Formation of lanthanum and strontium zirconates was completely avoided at temperatures as high as 1300 C by synthesizing lanthanum manganites from MnO2 doped with 15 at.% of Sr. Finally, in the presence of LSM, monoclinic phase content was diminished to less than 1.5 mol% after heat treatment at 1300 C.
Mechanosynthesis and magnetic characterization of nanocrystalline manganese ferrites
Amorphization of Co-base alloy by mechanical alloying
CARACTERIZACIÓN DE FERRITA DE MANGANESO OBTENIDA POR MECANOSÍNTESIS
OBTENCION DE Co-27Cr-6Mo MEDIANTE ALEADO MECANICO PARAPOSIBLES APLICACIONES BIOMÉDICAS
MECANOSÍNTESIS DE MANGANITAS DE LANTANO: EFECTO DE LA RELACIÓN EN PESO BOLAS:POLVO
MECANOSÍNTESIS DE MANGANITAS DE LANTANO: EFECTO DE LA RELACIÓN EN PESO BOLAS:POLVO