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

Robson L. Grosso; Dereck N.F. Muche; Taeko Yonamine; Eliana N.S. Muccillo; Shen J. Dillon; Ricardo H.R. Castro

doi:10.1016/j.matlet.2019.06.076

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

Robson L. Grosso, Dereck N.F. Muche, Taeko Yonamine, Eliana N.S. Muccillo, Shen J. Dillon, Ricardo H.R. Castro

Research output: Contribution to journal › Article › peer-review

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 coprecipitation method. Green pellets were sintered at temperatures varying from 700 to 900 °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.

Original language	English (US)
Pages (from-to)	246-249
Number of pages	4
Journal	Materials Letters
Volume	253
DOIs	https://doi.org/10.1016/j.matlet.2019.06.076
State	Published - Oct 15 2019

Keywords

Ceramics
Microstructure
Nanocrystalline materials
Phase stabilization
Sintering

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Online availability

10.1016/j.matlet.2019.06.076

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title = "Sintering of translucent and single-phase nanostructured scandia-stabilized zirconia",

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 coprecipitation method. Green pellets were sintered at temperatures varying from 700 to 900 °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.",

keywords = "Ceramics, Microstructure, Nanocrystalline materials, Phase stabilization, Sintering",

author = "Grosso, {Robson L.} and Muche, {Dereck N.F.} and Taeko Yonamine and Muccillo, {Eliana N.S.} and Dillon, {Shen J.} and Castro, {Ricardo H.R.}",

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year = "2019",

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doi = "10.1016/j.matlet.2019.06.076",

language = "English (US)",

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T1 - Sintering of translucent and single-phase nanostructured scandia-stabilized zirconia

AU - Grosso, Robson L.

AU - Muche, Dereck N.F.

AU - Yonamine, Taeko

AU - Muccillo, Eliana N.S.

AU - Dillon, Shen J.

AU - Castro, Ricardo H.R.

PY - 2019/10/15

Y1 - 2019/10/15

N2 - 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 coprecipitation method. Green pellets were sintered at temperatures varying from 700 to 900 °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.

AB - 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 coprecipitation method. Green pellets were sintered at temperatures varying from 700 to 900 °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.

KW - Ceramics

KW - Microstructure

KW - Nanocrystalline materials

KW - Phase stabilization

KW - Sintering

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SN - 0167-577X

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SP - 246

EP - 249

JO - Materials Letters

JF - Materials Letters

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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