Chemical compatibility of RE1-xSrxMnO3 +/-delta (RE = La, Pr, Nd, Gd, 0 <= x <= 0.5) with yttria stabilized zirconia solid electrolyte

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Title

Chemical compatibility of RE1-xSrxMnO3 +/-delta (RE = La, Pr, Nd, Gd, 0 <= x <= 0.5) with yttria stabilized zirconia solid electrolyte (EN)

Creator

Kostogloudis, GC (EN)

Ftikos, C (EN)

Type

journalArticle (EN)

Partial document
Publication in journal (EN)

Article
Scientific article (EN)

Issued

2014-03-01T01:47:34Z

1998 (EN)

Year

1998 (EN)

Description

The chemical reactivity of RE1-xSrxMnO3+/-delta (RE = La, Pr, Nd, Gd) perovskite oxides with yttria stabilized zirconia (YSZ) was investigated. Equimolar perovskite/YSZ powder mixtures were prepared and annealed in air at 1300 degrees C for 120 h. The X-ray diffraction analysis showed the formation of RE2Zr2O7 and SrZrO3 reaction products for perovskites with low and high Sr-content, respectively. Small amounts of Mn3O4 were identified for samples that showed high reactivity with YSZ. The extent of RE2Zr2O7 formation is reduced as the ionic radius of the rare earth cation decreases, the only exception being La2Zr2O7, which is formed in minor amounts. The formation of SrZrO3 is favored with increasing Sr-content and decreasing tolerance factor of the perovskite. Among the compositions studied, La1-xSrxMnO3+/-delta showed the best chemical compatibility with YSZ electrolyte. (C) 1998 Elsevier Science Limited. All rights reserved. (EN)

Scientific field

Materials Science, Ceramics (EN)

Engineering and Technology ▶ Materials Engineering
Ceramics and Composites (EN)

Subject

CATHODE (EN)

FUEL-CELLS (EN)

PEROVSKITE (EN)

Journal

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY (EN)

Language

English

Publisher