Low temperature degradation of yttria stabilized zirconia

Zhenglan Lu; Danyu Jiang; Lei Hu; Guoqiang Zhu; Qiang Li; Cheng Zhang

doi:10.4028/0-87849-410-3.1188

Low temperature degradation of yttria stabilized zirconia

Zhenglan Lu^*
, Danyu Jiang
, Lei Hu
, Guoqiang Zhu
, Qiang Li
, Cheng Zhang

^*Corresponding author for this work

School of Chemistry and Molecular Engineering

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

2 Scopus citations

Abstract

This paper explores the effects of dopant content on the aging behavior of tetragonal zirconia polycrystal (TZP). TZP powders with varying Y ₂O₃ content (1.75-3mol%) were synthesized by co-precipitation. After the green body of as-prepared TZP powders being isostatically pressed at 200 MPa and sintered at 1400°C for 3 h in air, a range of TZP ceramics were fabricated. As-synthesized TZP ceramics annealed at relatively low temperatures with the presence of water or water vapor. XRD analysis was conducted for phase identification and determined a tetragonal to monoclinic transformation. Microscope imaging displayed the changes of aged TZP surface structure. It is believed that the degradation of TZP might be caused by the reaction between Y₂O₃ and H₂O. The mechanism of low temperature degradation of TZP was discussed.

Original language	English
Pages (from-to)	1188-1189
Number of pages	2
Journal	Key Engineering Materials
Volume	336-338 II
DOIs	https://doi.org/10.4028/0-87849-410-3.1188
State	Published - 2007

Keywords

Degradation
TZP

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title = "Low temperature degradation of yttria stabilized zirconia",

abstract = "This paper explores the effects of dopant content on the aging behavior of tetragonal zirconia polycrystal (TZP). TZP powders with varying Y 2O3 content (1.75-3mol\%) were synthesized by co-precipitation. After the green body of as-prepared TZP powders being isostatically pressed at 200 MPa and sintered at 1400°C for 3 h in air, a range of TZP ceramics were fabricated. As-synthesized TZP ceramics annealed at relatively low temperatures with the presence of water or water vapor. XRD analysis was conducted for phase identification and determined a tetragonal to monoclinic transformation. Microscope imaging displayed the changes of aged TZP surface structure. It is believed that the degradation of TZP might be caused by the reaction between Y2O3 and H2O. The mechanism of low temperature degradation of TZP was discussed.",

keywords = "Degradation, TZP",

author = "Zhenglan Lu and Danyu Jiang and Lei Hu and Guoqiang Zhu and Qiang Li and Cheng Zhang",

year = "2007",

doi = "10.4028/0-87849-410-3.1188",

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volume = "336-338 II",

pages = "1188--1189",

journal = "Key Engineering Materials",

issn = "1013-9826",

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TY - JOUR

T1 - Low temperature degradation of yttria stabilized zirconia

AU - Lu, Zhenglan

AU - Jiang, Danyu

AU - Hu, Lei

AU - Zhu, Guoqiang

AU - Li, Qiang

AU - Zhang, Cheng

PY - 2007

Y1 - 2007

N2 - This paper explores the effects of dopant content on the aging behavior of tetragonal zirconia polycrystal (TZP). TZP powders with varying Y 2O3 content (1.75-3mol%) were synthesized by co-precipitation. After the green body of as-prepared TZP powders being isostatically pressed at 200 MPa and sintered at 1400°C for 3 h in air, a range of TZP ceramics were fabricated. As-synthesized TZP ceramics annealed at relatively low temperatures with the presence of water or water vapor. XRD analysis was conducted for phase identification and determined a tetragonal to monoclinic transformation. Microscope imaging displayed the changes of aged TZP surface structure. It is believed that the degradation of TZP might be caused by the reaction between Y2O3 and H2O. The mechanism of low temperature degradation of TZP was discussed.

AB - This paper explores the effects of dopant content on the aging behavior of tetragonal zirconia polycrystal (TZP). TZP powders with varying Y 2O3 content (1.75-3mol%) were synthesized by co-precipitation. After the green body of as-prepared TZP powders being isostatically pressed at 200 MPa and sintered at 1400°C for 3 h in air, a range of TZP ceramics were fabricated. As-synthesized TZP ceramics annealed at relatively low temperatures with the presence of water or water vapor. XRD analysis was conducted for phase identification and determined a tetragonal to monoclinic transformation. Microscope imaging displayed the changes of aged TZP surface structure. It is believed that the degradation of TZP might be caused by the reaction between Y2O3 and H2O. The mechanism of low temperature degradation of TZP was discussed.

KW - Degradation

KW - TZP

UR - https://www.scopus.com/pages/publications/33947194353

U2 - 10.4028/0-87849-410-3.1188

DO - 10.4028/0-87849-410-3.1188

M3 - 文章

AN - SCOPUS:33947194353

SN - 1013-9826

VL - 336-338 II

SP - 1188

EP - 1189

JO - Key Engineering Materials

JF - Key Engineering Materials

ER -

Low temperature degradation of yttria stabilized zirconia

Abstract

Keywords

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