The densification behavior of flash sintered BaTiO3

Ke Ren; Sisi Huang; Yejie Cao; Gang Shao; Yiguang Wang

doi:10.1016/j.scriptamat.2020.05.005

The densification behavior of flash sintered BaTiO₃

Ke Ren, Sisi Huang, Yejie Cao, Gang Shao, Yiguang Wang^*

^*Corresponding author for this work

Institute of Advanced Structure Technology

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

45 Citations (Scopus)

Abstract

Herein, we report the densification behavior of a typical electric ceramic, barium titanate (BaTiO₃), and highlight the role of oxygen vacancies in rapid densification of BaTiO₃ during flash sintering. The activation energies of flash- and conventional-densification processes are compared to reveal that the initiation of flash sintering is triggered by the accumulation of generated oxygen vacancies under the electric field. Furthermore, the densification kinetics of BaTiO₃ and X-ray photoelectron spectroscopy of flash-sintered BaTiO₃ infer that the ultrafast densification during the flash-sintering stage is dominated by the migration of electric field-generated defects coupled with defect-annihilation by take-in oxygen from the environment.

Original language	English
Pages (from-to)	362-365
Number of pages	4
Journal	Scripta Materialia
Volume	186
DOIs	https://doi.org/10.1016/j.scriptamat.2020.05.005
Publication status	Published - Sept 2020

Keywords

BaTiO
Defect annihilation
Densification kinetics
Flash sintering
Oxygen vacancies

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10.1016/j.scriptamat.2020.05.005

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title = "The densification behavior of flash sintered BaTiO3 ",

abstract = "Herein, we report the densification behavior of a typical electric ceramic, barium titanate (BaTiO3), and highlight the role of oxygen vacancies in rapid densification of BaTiO3 during flash sintering. The activation energies of flash- and conventional-densification processes are compared to reveal that the initiation of flash sintering is triggered by the accumulation of generated oxygen vacancies under the electric field. Furthermore, the densification kinetics of BaTiO3 and X-ray photoelectron spectroscopy of flash-sintered BaTiO3 infer that the ultrafast densification during the flash-sintering stage is dominated by the migration of electric field-generated defects coupled with defect-annihilation by take-in oxygen from the environment.",

keywords = "BaTiO, Defect annihilation, Densification kinetics, Flash sintering, Oxygen vacancies",

author = "Ke Ren and Sisi Huang and Yejie Cao and Gang Shao and Yiguang Wang",

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year = "2020",

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doi = "10.1016/j.scriptamat.2020.05.005",

language = "English",

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T1 - The densification behavior of flash sintered BaTiO3

AU - Ren, Ke

AU - Huang, Sisi

AU - Cao, Yejie

AU - Shao, Gang

AU - Wang, Yiguang

PY - 2020/9

Y1 - 2020/9

N2 - Herein, we report the densification behavior of a typical electric ceramic, barium titanate (BaTiO3), and highlight the role of oxygen vacancies in rapid densification of BaTiO3 during flash sintering. The activation energies of flash- and conventional-densification processes are compared to reveal that the initiation of flash sintering is triggered by the accumulation of generated oxygen vacancies under the electric field. Furthermore, the densification kinetics of BaTiO3 and X-ray photoelectron spectroscopy of flash-sintered BaTiO3 infer that the ultrafast densification during the flash-sintering stage is dominated by the migration of electric field-generated defects coupled with defect-annihilation by take-in oxygen from the environment.

AB - Herein, we report the densification behavior of a typical electric ceramic, barium titanate (BaTiO3), and highlight the role of oxygen vacancies in rapid densification of BaTiO3 during flash sintering. The activation energies of flash- and conventional-densification processes are compared to reveal that the initiation of flash sintering is triggered by the accumulation of generated oxygen vacancies under the electric field. Furthermore, the densification kinetics of BaTiO3 and X-ray photoelectron spectroscopy of flash-sintered BaTiO3 infer that the ultrafast densification during the flash-sintering stage is dominated by the migration of electric field-generated defects coupled with defect-annihilation by take-in oxygen from the environment.

KW - BaTiO

KW - Defect annihilation

KW - Densification kinetics

KW - Flash sintering

KW - Oxygen vacancies

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DO - 10.1016/j.scriptamat.2020.05.005

M3 - Article

AN - SCOPUS:85085730510

SN - 1359-6462

VL - 186

SP - 362

EP - 365

JO - Scripta Materialia

JF - Scripta Materialia

ER -

The densification behavior of flash sintered BaTiO₃

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Keywords

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