Effect of Ta2O5-Y2O3 Dopants on Phase Structure, Fracture Toughness and Thermophysical Properties of Zirconia

Dong Chen; Quansheng Wang; Yanbo Liu; Xianjin Ning

Effect of Ta₂O₅-Y₂O₃ Dopants on Phase Structure, Fracture Toughness and Thermophysical Properties of Zirconia

Dong Chen, Quansheng Wang, Yanbo Liu, Xianjin Ning^*

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

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

2 Citations (Scopus)

Abstract

A broad range of Ta₂O₅-Y₂O₃ doped ZrO₂ (TYSZ) compounds were synthesized. The effects of dopant content on phase structure, phase stability, fracture toughness, coefficient of thermal expansion (CTE), and thermal conductivity were investigated. The TYSZ response mechanism under stress conditions was also explored. Result suggests that the lattice distortion caused by Ta₂O₅ and Y₂O₃ doping favors t phase stabilization. However, as the doping content increases, the high-temperature stability and fracture toughness decrease due to the suppressed stress-induced phase transformation and precipitation. The variation in CTE and thermal conductivity is due to the chaotic and expansive crystal structure. The 16TYSZ might be the potential candidate for advanced thermal barrier coating materials for its good phase stability, stress-sensitive phase transferability, and thermophysical properties.

Translated title of the contribution	Ta₂O₅-Y₂O₃ 掺杂剂对氧化锆相结构, 断裂韧性和热物理性能的影响
Original language	English
Pages (from-to)	1890-1895
Number of pages	6
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	50
Issue number	6
Publication status	Published - Jun 2021

Keywords

Fracture toughness
Phase stability
Thermal barrier coatings
Thermo-physical properties

Cite this

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title = "Effect of Ta2O5-Y2O3 Dopants on Phase Structure, Fracture Toughness and Thermophysical Properties of Zirconia",

abstract = "A broad range of Ta2O5-Y2O3 doped ZrO2 (TYSZ) compounds were synthesized. The effects of dopant content on phase structure, phase stability, fracture toughness, coefficient of thermal expansion (CTE), and thermal conductivity were investigated. The TYSZ response mechanism under stress conditions was also explored. Result suggests that the lattice distortion caused by Ta2O5 and Y2O3 doping favors t phase stabilization. However, as the doping content increases, the high-temperature stability and fracture toughness decrease due to the suppressed stress-induced phase transformation and precipitation. The variation in CTE and thermal conductivity is due to the chaotic and expansive crystal structure. The 16TYSZ might be the potential candidate for advanced thermal barrier coating materials for its good phase stability, stress-sensitive phase transferability, and thermophysical properties.",

keywords = "Fracture toughness, Phase stability, Thermal barrier coatings, Thermo-physical properties",

author = "Dong Chen and Quansheng Wang and Yanbo Liu and Xianjin Ning",

year = "2021",

month = jun,

language = "English",

volume = "50",

pages = "1890--1895",

journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

issn = "1002-185X",

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number = "6",

}

TY - JOUR

T1 - Effect of Ta2O5-Y2O3 Dopants on Phase Structure, Fracture Toughness and Thermophysical Properties of Zirconia

AU - Chen, Dong

AU - Wang, Quansheng

AU - Liu, Yanbo

AU - Ning, Xianjin

PY - 2021/6

Y1 - 2021/6

N2 - A broad range of Ta2O5-Y2O3 doped ZrO2 (TYSZ) compounds were synthesized. The effects of dopant content on phase structure, phase stability, fracture toughness, coefficient of thermal expansion (CTE), and thermal conductivity were investigated. The TYSZ response mechanism under stress conditions was also explored. Result suggests that the lattice distortion caused by Ta2O5 and Y2O3 doping favors t phase stabilization. However, as the doping content increases, the high-temperature stability and fracture toughness decrease due to the suppressed stress-induced phase transformation and precipitation. The variation in CTE and thermal conductivity is due to the chaotic and expansive crystal structure. The 16TYSZ might be the potential candidate for advanced thermal barrier coating materials for its good phase stability, stress-sensitive phase transferability, and thermophysical properties.

AB - A broad range of Ta2O5-Y2O3 doped ZrO2 (TYSZ) compounds were synthesized. The effects of dopant content on phase structure, phase stability, fracture toughness, coefficient of thermal expansion (CTE), and thermal conductivity were investigated. The TYSZ response mechanism under stress conditions was also explored. Result suggests that the lattice distortion caused by Ta2O5 and Y2O3 doping favors t phase stabilization. However, as the doping content increases, the high-temperature stability and fracture toughness decrease due to the suppressed stress-induced phase transformation and precipitation. The variation in CTE and thermal conductivity is due to the chaotic and expansive crystal structure. The 16TYSZ might be the potential candidate for advanced thermal barrier coating materials for its good phase stability, stress-sensitive phase transferability, and thermophysical properties.

KW - Fracture toughness

KW - Phase stability

KW - Thermal barrier coatings

KW - Thermo-physical properties

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M3 - Article

AN - SCOPUS:85111212046

SN - 1002-185X

VL - 50

SP - 1890

EP - 1895

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 6

ER -

Effect of Ta₂O₅-Y₂O₃ Dopants on Phase Structure, Fracture Toughness and Thermophysical Properties of Zirconia

Abstract

Keywords

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