Microstructure evolution during field-assisted sintering of zirconia spheres

D. Demirskyi; H. Borodianska; S. Grasso; Y. Sakka; O. Vasylkiv

doi:10.1016/j.scriptamat.2011.07.006

Microstructure evolution during field-assisted sintering of zirconia spheres

D. Demirskyi, H. Borodianska, S. Grasso, Y. Sakka, O. Vasylkiv

Advanced Institute for Materials Research (AIMR)

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

27 Citations (Scopus)

Abstract

The microstructure evolution during microwave-assisted sintering and spark plasma sintering of 50 μm spherical powder is presented. The two microstructures formed are alike, and show unexpected details that cannot be explained just by conventional thermal and pressure effects; one also has to consider "field" effects. This also suggests that the driving force is similar. An explanation and analysis of the microstructure evolution is attempted based on the enhancement of the conductivity of zirconia when the heating temperature increases. The consequences are possible discharge effects at lower heating temperatures and high reversed heating gradients above 800-850 °C.

Original language	English
Pages (from-to)	683-686
Number of pages	4
Journal	Scripta Materialia
Volume	65
Issue number	8
DOIs	https://doi.org/10.1016/j.scriptamat.2011.07.006
Publication status	Published - 2011 Oct

Keywords

Ceramics
Microwave heating
Sintering
SPS
Zirconia

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10.1016/j.scriptamat.2011.07.006

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title = "Microstructure evolution during field-assisted sintering of zirconia spheres",

abstract = "The microstructure evolution during microwave-assisted sintering and spark plasma sintering of 50 μm spherical powder is presented. The two microstructures formed are alike, and show unexpected details that cannot be explained just by conventional thermal and pressure effects; one also has to consider {"}field{"} effects. This also suggests that the driving force is similar. An explanation and analysis of the microstructure evolution is attempted based on the enhancement of the conductivity of zirconia when the heating temperature increases. The consequences are possible discharge effects at lower heating temperatures and high reversed heating gradients above 800-850 °C.",

keywords = "Ceramics, Microwave heating, Sintering, SPS, Zirconia",

author = "D. Demirskyi and H. Borodianska and S. Grasso and Y. Sakka and O. Vasylkiv",

note = "Funding Information: The financial support of the NAS of Ukraine via research grant “Sintering kinetics of nanocrystalline oxide ceramics in the external electric and microwave fields” is gratefully acknowledged by D.D. and H.B. The authors acknowledge Prof. Petre Badica for fruitful discussion and his helpful suggestions for editing this paper.",

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AU - Demirskyi, D.

AU - Borodianska, H.

AU - Grasso, S.

AU - Sakka, Y.

AU - Vasylkiv, O.

N1 - Funding Information: The financial support of the NAS of Ukraine via research grant “Sintering kinetics of nanocrystalline oxide ceramics in the external electric and microwave fields” is gratefully acknowledged by D.D. and H.B. The authors acknowledge Prof. Petre Badica for fruitful discussion and his helpful suggestions for editing this paper.

PY - 2011/10

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N2 - The microstructure evolution during microwave-assisted sintering and spark plasma sintering of 50 μm spherical powder is presented. The two microstructures formed are alike, and show unexpected details that cannot be explained just by conventional thermal and pressure effects; one also has to consider "field" effects. This also suggests that the driving force is similar. An explanation and analysis of the microstructure evolution is attempted based on the enhancement of the conductivity of zirconia when the heating temperature increases. The consequences are possible discharge effects at lower heating temperatures and high reversed heating gradients above 800-850 °C.

AB - The microstructure evolution during microwave-assisted sintering and spark plasma sintering of 50 μm spherical powder is presented. The two microstructures formed are alike, and show unexpected details that cannot be explained just by conventional thermal and pressure effects; one also has to consider "field" effects. This also suggests that the driving force is similar. An explanation and analysis of the microstructure evolution is attempted based on the enhancement of the conductivity of zirconia when the heating temperature increases. The consequences are possible discharge effects at lower heating temperatures and high reversed heating gradients above 800-850 °C.

KW - Ceramics

KW - Microwave heating

KW - Sintering

KW - SPS

KW - Zirconia

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Microstructure evolution during field-assisted sintering of zirconia spheres

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Keywords

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