Effect of Li doping on sintering characteristics and microstructural behavior of yttria-stabilized zirconia

Jung A. Lee; Ho Chang Lee; Young Woo Heo; Joon Hyung Lee; Jeong Joo Kim

doi:10.1016/j.ceramint.2016.08.030

Effect of Li doping on sintering characteristics and microstructural behavior of yttria-stabilized zirconia

Jung A. Lee
, Ho Chang Lee
, Young Woo Heo
, Joon Hyung Lee
, Jeong Joo Kim

Kyungpook National University

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

10 Scopus citations

Abstract

The sintering behavior of Li-doped yttria-stabilized zirconia (YSZ) was investigated. Li doping in YSZ reduced the densification temperature and enhanced grain growth, as a result of the formation of a lithium-zirconate-related eutectic liquid during sintering. For 5 at% Li doping, the sample developed a duplex microstructure consisting of small grains with second phase particles in the inner region and large grains with pores in the surface region. The second phase of Li₂ZrO₃ near the surface of the sample decomposed into Li₂O and ZrO₂, followed by the evaporation of Li₂O during sintering, leaving behind large pores in the microstructure.

Original language	English
Pages (from-to)	17339-17346
Number of pages	8
Journal	Ceramics International
Volume	42
Issue number	15
DOIs	https://doi.org/10.1016/j.ceramint.2016.08.030
State	Published - 15 Nov 2016

Keywords

Densification
Grain growth
Li doping
Yttria-stabilized zirconia

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10.1016/j.ceramint.2016.08.030

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@article{ce0df18c33684a8cba5e270d32449b43,

title = "Effect of Li doping on sintering characteristics and microstructural behavior of yttria-stabilized zirconia",

abstract = "The sintering behavior of Li-doped yttria-stabilized zirconia (YSZ) was investigated. Li doping in YSZ reduced the densification temperature and enhanced grain growth, as a result of the formation of a lithium-zirconate-related eutectic liquid during sintering. For 5 at\% Li doping, the sample developed a duplex microstructure consisting of small grains with second phase particles in the inner region and large grains with pores in the surface region. The second phase of Li2ZrO3 near the surface of the sample decomposed into Li2O and ZrO2, followed by the evaporation of Li2O during sintering, leaving behind large pores in the microstructure.",

keywords = "Densification, Grain growth, Li doping, Yttria-stabilized zirconia",

author = "Lee, \{Jung A.\} and Lee, \{Ho Chang\} and Heo, \{Young Woo\} and Lee, \{Joon Hyung\} and Kim, \{Jeong Joo\}",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd and Techna Group S.r.l.",

year = "2016",

month = nov,

day = "15",

doi = "10.1016/j.ceramint.2016.08.030",

language = "English",

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journal = "Ceramics International",

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TY - JOUR

T1 - Effect of Li doping on sintering characteristics and microstructural behavior of yttria-stabilized zirconia

AU - Lee, Jung A.

AU - Lee, Ho Chang

AU - Heo, Young Woo

AU - Lee, Joon Hyung

AU - Kim, Jeong Joo

PY - 2016/11/15

Y1 - 2016/11/15

N2 - The sintering behavior of Li-doped yttria-stabilized zirconia (YSZ) was investigated. Li doping in YSZ reduced the densification temperature and enhanced grain growth, as a result of the formation of a lithium-zirconate-related eutectic liquid during sintering. For 5 at% Li doping, the sample developed a duplex microstructure consisting of small grains with second phase particles in the inner region and large grains with pores in the surface region. The second phase of Li2ZrO3 near the surface of the sample decomposed into Li2O and ZrO2, followed by the evaporation of Li2O during sintering, leaving behind large pores in the microstructure.

AB - The sintering behavior of Li-doped yttria-stabilized zirconia (YSZ) was investigated. Li doping in YSZ reduced the densification temperature and enhanced grain growth, as a result of the formation of a lithium-zirconate-related eutectic liquid during sintering. For 5 at% Li doping, the sample developed a duplex microstructure consisting of small grains with second phase particles in the inner region and large grains with pores in the surface region. The second phase of Li2ZrO3 near the surface of the sample decomposed into Li2O and ZrO2, followed by the evaporation of Li2O during sintering, leaving behind large pores in the microstructure.

KW - Densification

KW - Grain growth

KW - Li doping

KW - Yttria-stabilized zirconia

UR - https://www.scopus.com/pages/publications/84981717896

U2 - 10.1016/j.ceramint.2016.08.030

DO - 10.1016/j.ceramint.2016.08.030

M3 - Article

AN - SCOPUS:84981717896

SN - 0272-8842

VL - 42

SP - 17339

EP - 17346

JO - Ceramics International

JF - Ceramics International

IS - 15

ER -

Effect of Li doping on sintering characteristics and microstructural behavior of yttria-stabilized zirconia

Abstract

Keywords

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