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PhysicoChemical Characterization of Strontium‐ and Cobalt‐Doped Lanthanum Chromite Powders Produced by Combustion Synthesis
Author(s) -
Setz Luiz F. G.,
MelloCastanho Sonia R. H.,
Moreno Rodrigo,
Colomer María T.
Publication year - 2009
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2008.02302.x
Subject(s) - materials science , lanthanum , strontium , cobalt , chromite , chemical engineering , characterization (materials science) , solid oxide fuel cell , ceramic , combustion , particle size , doping , agglomerate , metallurgy , mineralogy , inorganic chemistry , nanotechnology , chemistry , electrolyte , composite material , physics , optoelectronics , electrode , nuclear physics , engineering
Doped lanthanum chromites are investigated as ceramic interconnect materials to be used in high‐temperature solid oxide fuel cells (SOFCs). In this work, a La 0.80 Sr 0.20 Cr 0.92 Co 0.08 O 3 powder was produced by combustion synthesis and characterized in terms of phases and crystalline structure, thermal evolution, particle size, and surface behavior. The effects of milling time on the particle size distribution and the agglomeration factor were also studied. The physicochemical characterization was completed with ζ potential measurements in order to establish the isoelectric point and the best pH conditions because slurry‐processing techniques are mostly used for the manufacture of the SOFC devices.