Penetration and characteristics of an intergranular-liquid phase during sintering of CaSi2O5-dropped 8 mol%-yttria-stabilized zirconia estimation by impedance spectroscopy

Young Soo Jung; Jung Hae Choi; Jong Heun Lee

doi:10.1016/j.mseb.2003.11.009

Penetration and characteristics of an intergranular-liquid phase during sintering of CaSi₂O₅-dropped 8 mol%-yttria-stabilized zirconia estimation by impedance spectroscopy

Young Soo Jung, Jung Hae Choi, Jong Heun Lee

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

Abstract

The grain-boundary resistivity of CaSi₂O₅-dropped 8 mol%-yttria-stabilized zirconia (8YSZ) was determined by impedance spectroscopy using sub-millimeter-scale electrodes. During sintering, a liquid that formed at the top surface of the specimen penetrated into the 8YSZ and induced enhanced grain growth near the surface region. The grain-boundary resistivity of the specimen surface was observed to be 150 times higher than that of the interior. The deterioration of the grain-boundary conductivity was explained in terms of the presence of an intergranular siliceous phase.

Original language	English
Pages (from-to)	219-222
Number of pages	4
Journal	Materials Science and Engineering: B
Volume	108
Issue number	3
DOIs	https://doi.org/10.1016/j.mseb.2003.11.009
Publication status	Published - 2004 May 15

Bibliographical note

Funding Information:
The work is supported by the Creative Research Initiatives of the Korean Ministry of Science and Technology.

Keywords

CaSiO-dropped 8YSZ
Distribution of siliceous grain-boundary phase
Grain-boundary resistivity
Impedance spectroscopy
Sintering

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.mseb.2003.11.009

Cite this

Penetration and characteristics of an intergranular-liquid phase during sintering of CaSi₂O₅-dropped 8 mol%-yttria-stabilized zirconia estimation by impedance spectroscopy. / Jung, Young Soo; Choi, Jung Hae; Lee, Jong Heun.
In: Materials Science and Engineering: B, Vol. 108, No. 3, 15.05.2004, p. 219-222.

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

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abstract = "The grain-boundary resistivity of CaSi2O5-dropped 8 mol%-yttria-stabilized zirconia (8YSZ) was determined by impedance spectroscopy using sub-millimeter-scale electrodes. During sintering, a liquid that formed at the top surface of the specimen penetrated into the 8YSZ and induced enhanced grain growth near the surface region. The grain-boundary resistivity of the specimen surface was observed to be 150 times higher than that of the interior. The deterioration of the grain-boundary conductivity was explained in terms of the presence of an intergranular siliceous phase.",

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