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Two‐Dimensional Modeling of Self‐Propagating High‐Temperature Synthesis of Strontium‐Doped Lanthanum Manganate
Author(s) -
Lin Sidney,
Selig Jiri
Publication year - 2010
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.1744-7402.2008.02339.x
Subject(s) - materials science , strontium , strontium oxide , manganate , lanthanum , activation energy , ignition system , mass transfer , combustion , heat transfer , doping , thermodynamics , analytical chemistry (journal) , oxide , chemical engineering , chemistry , inorganic chemistry , metallurgy , power (physics) , physics , optoelectronics , battery (electricity) , chromatography , nuclear physics , engineering
A two‐dimensional finite element model is developed to study the reaction kinetics and heat transfer during the self‐propagating high‐temperature synthesis of La 0.6 Sr 0.4 MnO 3 , a cathode and interconnect material used in solid oxide fuel cells. The activation energy of La 0.6 Sr 0.4 MnO 3 formation was calculated from experimental temperature history. The calculated spatial‐temporal temperature profile, heat generation rate, reaction conversion, and flow pattern of surrounding gas during the reaction are reported in this work. Hot spots are found at the corner near the ignition point shortly after the ignition. The model provided a simple and reliable way to design a large‐scale production of La 0.6 Sr 0.4 MnO 3 .