Advanced search
Start date
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Improved densification and ionic conductivity in flash-sintered gamma-ray irradiated yttria-stabilized zirconia

Full text
Muccillo, R. [1, 2] ; Muccillo, E. N. S. [2]
Total Authors: 2
[1] Fed Univ ABC, BR-09210580 Santo Andre, SP - Brazil
[2] Energy & Nucl Res Inst, Ctr Sci & Technol Mat, BR-05508170 Sao Paulo, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: SCRIPTA MATERIALIA; v. 170, p. 120-123, SEP 2019.
Web of Science Citations: 0

Experiments on electric field-assisted pressureless sintering were conducted, with a dilatometer connected to a power supply, in zirconia: 8 mol% yttria polycrystalline ceramics exposed to gamma radiation. During heating to 1000 degrees C, an electric field of 150 V cm(-1) was applied at room temperature up to a sharp thickness shrinkage occurred (flash sintering). It was found that the higher the imparted gamma radiation dose the higher the shrinkage. The shrinkage enhancement and the increase of the total ionic conductivity, when compared to non-irradiated sample, were probably due to the increase of oxygen vacancy concentration after exposure to gamma radiation. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 17/11937-4 - A sustainable path to methane conversion by advanced electrochemical technologies
Grantee:Fabio Coral Fonseca
Support type: Research Grants - Research Centers in Engineering Program
FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC