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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.)

Sintering of translucent and single-phase nanostructured scandia-stabilized zirconia

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Author(s):
Grosso, Robson L. [1, 2, 3, 4] ; Muche, Dereck N. F. [1, 2] ; Yonamine, Taeko [5] ; Muccillo, Eliana N. S. [4] ; Dillon, Shen J. [3] ; Castro, Ricardo H. R. [1, 2]
Total Authors: 6
Affiliation:
[1] Univ Calif Davis, NEAT ORU, Davis, CA 95616 - USA
[2] Univ Calif Davis, Dept Mat Sci & Engn, Davis, CA 95616 - USA
[3] Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 - USA
[4] Energy & Nucl Res Inst, POB 11049, Sao Paulo - Brazil
[5] Inst Technol Res, BR-05508901 Sao Paulo - Brazil
Total Affiliations: 5
Document type: Journal article
Source: Materials Letters; v. 253, p. 246-249, OCT 15 2019.
Web of Science Citations: 0
Abstract

Fully-dense and single-phase nanostructured scandia-stabilized zirconia specimens were produced by high-pressure spark plasma sintering technique. Nanocrystalline powders were prepared by the copre-cipitation method. Green pellets were sintered at temperatures varying from 700 to 900 degrees C and pressures from 1.4 to 2 GPa, resulting in dense microstructures with single-phase fluorite-type cubic structure within a wide range of Sc2O3 content (6-15 mol%). The average grain size of sintered specimens ranged from 8 to 20 nm. Transmittance spectra confirm translucence in sintered specimens, which is consistent with full density. The results reported here reveal that the polymorphism challenge in the zirconia-scandia system can be successfully suppressed by this consolidation technique, which allows for controlling the grain size of bulk specimens. (C) 2019 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 16/06205-1 - Characterization of nanostructured scandia-zirconia ceramics consolidated by spark plasma sintering.
Grantee:Robson Lopes Grosso
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 17/25501-3 - Grain size dependent phase transition and Hall-Petch relationship in nanocrystalline Scandia-Zirconia: an in-situ TEM study
Grantee:Robson Lopes Grosso
Support Opportunities: Scholarships abroad - Research Internship - Post-doctor