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Synthesis and Characterization of Sr‐ and Mg‐Doped LaGaO 3 Tapes
Author(s) -
Majewski Peter,
Maldener Thorsten
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.1744-7402.2008.02262.x
Subject(s) - materials science , sintering , crystallinity , vickers hardness test , microstructure , annealing (glass) , porosity , doping , evaporation , chemical composition , metallurgy , composite material , mineralogy , physics , chemistry , optoelectronics , thermodynamics
The study focuses the processing of La 1− x Sr x Ga 1− y Mg y O 3− d (LSGM) tapes and the characterization of their microstructure, chemical composition, and sinter behavior during annealing. Dilatometric runs show that sintering of the tapes conclude at about 1500°C. This finding correlates with the observed sharp increase of the crystallinity of LSGM at higher temperatures. The porosity of the tapes has been found to be minimum at 1525°C. Increasing sintering temperatures cause a loss of Sr, Mg, and Ga, which is presumably due to evaporation of the elements. The Vickers hardness of the tapes sintered at 1500°C was measured to be about 900.