Titlebar

Export bibliographic data
Literature by the same author
plus on the publication server
plus at Google Scholar

 

Anisotropy and thermal stability of hot-forged BICUTIVOX oxygen ion conducting ceramics

Title data

Fuierer, Paul ; Maier, Mitchell ; Exner, Jörg ; Moos, Ralf:
Anisotropy and thermal stability of hot-forged BICUTIVOX oxygen ion conducting ceramics.
In: Journal of the European Ceramic Society. Vol. 34 (2014) Issue 4 . - pp. 943-951.
ISSN 0955-2219
DOI: 10.1016/j.jeurceramsoc.2013.10.016

Official URL: Volltext

Project information

Project title:
Project's official titleProject's id
No informationMO 1060/16-1
No informationNSF grant # 1108466

Project financing: Deutsche Forschungsgemeinschaft
Materials World Network

Abstract in another language

The oxygen ion conductivity of ultra dense, hot forged Bi4(MexV1−x)2O11 (BIMEVOX) ceramics is reported for the first time. A novel approach to electrode preparation, including laser trenching, was developed to perform 4-probe impedance spectroscopy and determine conductivity of small bar-shaped samples with high accuracy and precision. Hot forged (HF) Bi4(Cu0.05Ti0.05V0.90)2O11 (BICUTIVOX) ceramic, with modest preferred orientation (11%), exhibits anisotropy by a factor of 2 in its conductivity. Brick layer model (BLM) analysis of complex impedance plots reveals that the relative contribution of grains and grain boundaries to the total resistance is direction dependent, in the low temperature γ′ phase. The total ionic conductivity of BICUTIVOX, prepared either by hot-forging or conventional sintering, appears to be stable with thermal aging and cycling. Anisotropy in the thermal expansion of polycrystalline BIMEVOX ceramics is also reported.

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
Faculties
Faculties > Faculty of Engineering Science > Chair Functional Materials
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: 01 Dec 2014 09:41
Last Modified: 15 Apr 2016 07:58
URI: https://eref.uni-bayreuth.de/id/eprint/3859