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Aerosol Codeposition of Ceramics: Mixtures of Bi₂O₃-TiO₂ and Bi₂O₃-V₂O₅

Title data

Exner, Jörg ; Fuierer, Paul ; Moos, Ralf:
Aerosol Codeposition of Ceramics: Mixtures of Bi₂O₃-TiO₂ and Bi₂O₃-V₂O₅.
In: Journal of the American Ceramic Society. Vol. 98 (2015) Issue 3 . - pp. 717-723.
ISSN 1551-2916
DOI: https://doi.org/10.1111/jace.13364

Official URL: Volltext

Project information

Project title:
Project's official titleProject's id
No informationMo 1060/20
No informationMo 1060/16-1

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

Aerosol deposition (AD) is a promising method to apply ceramic films on a wide range of substrate materials. Until now, AD has mainly been performed using a single ceramic powder. In this work, mixtures of two different ceramic powders were prepared. The first mixture consisted of Bi2O3 and TiO2 and the second consisted of Bi2O3 and V2O5, in stoichiometric ratios to form Bi4Ti3O12 and Bi4V2O11−δ, respectively. Aerosol codeposition produced films with homogeneously distributed particle fractions and thicknesses between 10 and 100 μm. Composite films were annealed to temperatures up to 750°C to enable an in situ calcination and attempted formation of the above-mentioned compounds. Successful formation of Bi4Ti3O12 was tracked by hot-stage X-ray diffraction (XRD), and confirmed by dielectric measurements. Formation of the intended Bi4V2O11−δ, on the other hand, was not achieved, but rather BiVO4, which was confirmed by XRD, EDX and electrical measurements. The bismuth deficiency occurred during spray deposition, and is attributed to powder/material characteristics. Additional insight about the AD process is gained by comparing mixtures of oxides with different relative hardness values. Aerosol codeposition of ceramics may be an interesting new technique for producing porous functional ceramics.

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
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Faculties
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 11 Mar 2015 07:11
Last Modified: 18 Apr 2016 07:30
URI: https://eref.uni-bayreuth.de/id/eprint/4958