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In- and through-plane conductivity of 8YSZ films produced at room temperature by aerosol deposition

Title data

Exner, Jörg ; Kita, Jaroslaw ; Moos, Ralf:
In- and through-plane conductivity of 8YSZ films produced at room temperature by aerosol deposition.
In: Journal of Materials Science. Vol. 54 (2019) Issue 21 . - pp. 13619-13634.
ISSN 1573-4803
DOI: https://doi.org/10.1007/s10853-019-03844-7

Abstract in another language

Aerosol deposition is a unique spray coating process to deposit dense ceramic films directly at room temperature just by spraying a dry powder, without any binder or additional sintering step needed. Therefore, it is a very promising coating method for functional materials that may be used to produce a variety of electrochemical devices, solid oxide fuel cells or gas sensors. However, functional properties like the electrical conductivity significantly depend on the microstructure of the produced film. Consequently, anisotropic film properties may occur even for isotropic functional materials. In this work, films of oxide ion-conducting yttria-stabilized zirconia (YSZ) were produced by aerosol deposition. The orientation-dependent electrical conductivity was measured using two different electrode configurations: one for the in-plane conductivity and another one for through-plane measurements. A slight anisotropy was observed, attributed to the present film morphology. In particular, the grain boundaries influenced the total conductivity. Furthermore, a thermal post-deposition treatment significantly affected the total conductivity of aerosol-deposited YSZ films.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 16 Sep 2019 08:20
Last Modified: 16 Sep 2019 08:20
URI: https://eref.uni-bayreuth.de/id/eprint/52138