Electrical conductivity of mullite-type Bi 2Al 4O 9 ceramics in air

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Autoren

  • S. Ohmann
  • P. Fielitz
  • L. Dörrer
  • G. Borchardt
  • Th M. Gesing
  • R. X. Fischer
  • C. H. Rüscher
  • J. C. Buhl
  • K. D. Becker
  • H. Schneider

Organisationseinheiten

Externe Organisationen

  • Technische Universität Clausthal
  • Universität Bremen
  • Technische Universität Braunschweig
  • Universität zu Köln
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Details

OriginalspracheEnglisch
Seiten (von - bis)46-50
Seitenumfang5
FachzeitschriftSOLID STATE IONICS
Jahrgang211
Frühes Online-Datum15 Feb. 2012
PublikationsstatusVeröffentlicht - 15 März 2012

Abstract

For the electrical conductivity of Bi 2Al 4O 9 based dense polycrystalline materials controversial data have been published in the literature. In this work samples with a nominal excess of Bi 2O 3 or SrO of up to 3 wt.% have been investigated in air using impedance spectroscopy. Both the results of this work and the literature data can be consistently interpreted on the basis of a simple model of the microstructure as consisting of Bi 2Al 4O 9 grains and a well conducting grain boundary film (Bi 2O 3 based in the case of a Bi 2O 3 excess) or a poorly conducting grain boundary film (SrO based in the case of a SrO excess), respectively. It turns out that the degree of SrO doping in Bi 2Al 4O 9 is much lower than suggested before. Thus an effect of SrO doping on the electrical conductivity of Bi 2Al 4O 9 can be ruled out.

ASJC Scopus Sachgebiete

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Electrical conductivity of mullite-type Bi 2Al 4O 9 ceramics in air. / Ohmann, S.; Fielitz, P.; Dörrer, L. et al.
in: SOLID STATE IONICS, Jahrgang 211, 15.03.2012, S. 46-50.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Ohmann, S, Fielitz, P, Dörrer, L, Borchardt, G, Gesing, TM, Fischer, RX, Rüscher, CH, Buhl, JC, Becker, KD & Schneider, H 2012, 'Electrical conductivity of mullite-type Bi 2Al 4O 9 ceramics in air', SOLID STATE IONICS, Jg. 211, S. 46-50. https://doi.org/10.1016/j.ssi.2012.01.030
Ohmann, S., Fielitz, P., Dörrer, L., Borchardt, G., Gesing, T. M., Fischer, R. X., Rüscher, C. H., Buhl, J. C., Becker, K. D., & Schneider, H. (2012). Electrical conductivity of mullite-type Bi 2Al 4O 9 ceramics in air. SOLID STATE IONICS, 211, 46-50. https://doi.org/10.1016/j.ssi.2012.01.030
Ohmann S, Fielitz P, Dörrer L, Borchardt G, Gesing TM, Fischer RX et al. Electrical conductivity of mullite-type Bi 2Al 4O 9 ceramics in air. SOLID STATE IONICS. 2012 Mär 15;211:46-50. Epub 2012 Feb 15. doi: 10.1016/j.ssi.2012.01.030
Ohmann, S. ; Fielitz, P. ; Dörrer, L. et al. / Electrical conductivity of mullite-type Bi 2Al 4O 9 ceramics in air. in: SOLID STATE IONICS. 2012 ; Jahrgang 211. S. 46-50.
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AU - Becker, K. D.

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