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

Influence of microwave-assisted hydrothermal treatment on the properties of nickel oxide-zirconia based composites

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Author(s):
Pinheiro, L. B. [1] ; Tabuti, F. N. [1] ; Martinelli, A. E. [2] ; Fonseca, F. C. [1]
Total Authors: 4
Affiliation:
[1] IPEN, CNEN, SP, BR-05508000 Sao Paulo, SP - Brazil
[2] Univ Fed Rio Grande do Norte, UFRN, BR-59072970 Natal, RN - Brazil
Total Affiliations: 2
Document type: Journal article
Source: CERAMICS INTERNATIONAL; v. 42, n. 7, p. 9058-9064, MAY 15 2016.
Web of Science Citations: 0
Abstract

The influence of a microwave-assisted hydrothermal treatment (MWH) on the properties of NiO-ZrO2:8 mol%Y2O3-CeO2 composite was investigated. The composites were prepared by coprecipitation of nickel and cerium salts in a suspension of ZrO2:8 mol%Y2O3 (YSZ). Simultaneous thermogravimetric and differential thermal analysis revealed that the MWH promotes the crystallization of Ni(OH)(2), as confirmed by X-ray diffraction. The sintering behavior of ceramic compacts was influenced by the MWH treatment, which contributed to slightly higher final apparent densities. Impedance spectroscopy measurements revealed that the electrical properties of sintered composites exhibit characteristics of mixed ionic-electronic conductors, a feature that was suppressed in the samples that underwent MHW treatment. Such an effect evidences the influence of hydrothermal treatment on the final microstructure of the composite. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved. (AU)

FAPESP's process: 14/50279-4 - Brasil Research Centre for Gas Innovation
Grantee:Julio Romano Meneghini
Support type: Research Grants - Research Partnership for Technological Innovation - PITE
FAPESP's process: 13/26961-7 - Development of anodes for solid oxide fuel cells operating directly on renewable fuels
Grantee:Fabio Coral Fonseca
Support type: Regular Research Grants
FAPESP's process: 14/09087-4 - Studies on the use of bioethanol in Proton Exchange Membrane and Solid Oxide Fuel Cells
Grantee:Marcelo Linardi
Support type: Research Projects - Thematic Grants