Sintering of translucent and single-phase nanostructured scandia-stabilized zirconia
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2019
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Materials Letters
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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 zirconiascandia
system can be successfully suppressed by this consolidation technique, which allows for controlling
the grain size of bulk specimens.
Como referenciar
GROSSO, ROBSON L.; MUCHE, DERECK N.F.; YONAMINE, TAEKO; MUCCILLO, ELIANA N.S.; DILLON, SHEN J.; CASTRO, RICARDO H.R. Sintering of translucent and single-phase nanostructured scandia-stabilized zirconia. Materials Letters, v. 253, p. 246-249, 2019. DOI: 10.1016/j.matlet.2019.06.076. Disponível em: http://repositorio.ipen.br/handle/123456789/30158. Acesso em: 19 Apr 2024.
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