Improved densification and ionic conductivity in flash-sintered gamma-ray irradiated yttria-stabilized zirconia

被引：1

作者：

Muccillo, R. ^{[1
,2
]}

Muccillo, E. N. S. ^{[1
]}

机构：

[1] Energy & Nucl Res Inst, Ctr Sci & Technol Mat, BR-05508170 Sao Paulo, SP, Brazil

[2] Fed Univ ABC, BR-09210580 Santo Andre, SP, Brazil

来源：

SCRIPTA MATERIALIA | 2019年 / 170卷

基金：

巴西圣保罗研究基金会;

关键词：

Flash sintering; Gamma irradiation; Zirconia; Ionic conductivity; RADIATION;

D O I：

10.1016/j.scriptamat.2019.06.004

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Experiments on electric field-assisted pressureless sintering were conducted, with a dilatometer connected to a power supply, in zirconia: 8 mol% yttria polycrystalline ceramics exposed to gamma radiation. During heating to 1000 degrees C, an electric field of 150 V cm(-1) was applied at room temperature up to a sharp thickness shrinkage occurred (flash sintering). It was found that the higher the imparted gamma radiation dose the higher the shrinkage. The shrinkage enhancement and the increase of the total ionic conductivity, when compared to non-irradiated sample, were probably due to the increase of oxygen vacancy concentration after exposure to gamma radiation. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：120 / 123

页数：4

共 29 条

[21] Ionic conductivity of plasma-sprayed nanocrystalline yttria-stabilized zirconia electrolyte for solid oxide fuel cells
Chen, Y.
Omar, S.
Keshri, A. K.
Balani, K.
Babu, K.
Nino, J. C.
Seal, S.
Agarwal, A.
SCRIPTA MATERIALIA, 2009, 60 (11) : 1023 - 1026
[22] Influence of electric field strength on structure, microstructure, and electrical properties of flash sintered 8% mol Yttria-stabilized zirconia as a solid oxide fuel cell electrolyte
Mohebbi, H.
Mirkazemi, S. M.
CERAMICS INTERNATIONAL, 2021, 47 (14) : 20220 - 20229
[23] Influence of Co3O4 addition on the ionic conductivity and microstructural properties of yttria-stabilized zirconia (8YSZ)
Aktas, Bulent
Tekeli, Suleyman
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH, 2014, 105 (06) : 577 - 583
[24] Theoretical Study on the Influence of the Anharmonic Effect on the Ionic Conductivity and Thermal Stability of 8 mol% Yttria-Stabilized Zirconia Solid Electrolyte Material
Gao, Junhua
Zhao, Xiaofeng
Cheng, Zhengfu
Tian, Liangliang
MATERIALS, 2023, 16 (15)
[25] Influence of through-lamella grain growth on ionic conductivity of plasma-sprayed yttria-stabilized zirconia as an electrolyte in solid oxide fuel cells
Xing, Ya-Zhe
Li, Chang-Jiu
Li, Cheng-Xin
Yang, Guan-Jun
JOURNAL OF POWER SOURCES, 2008, 176 (01) : 31 - 38
[26] Parameters influencing thermal shock resistance and ionic conductivity of 8 mol% yttria-stabilized zirconia (8YSZ) with dispersed second phases of alumina or mullite
Angle, Jesse P.
Steppan, James J.
Thompson, Patrick M.
Mecartney, Martha L.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2014, 34 (16) : 4327 - 4336
[27] Reconstituting the microstructural properties and ionic conductivity of copper - doped yttria-stabilized zirconia via mechanochemical synthesis for intermediate-temperature solid oxide fuel cell applications
Momin, Naeemakhtar
Manjanna, J.
Kobayashi, Satoru
Aruna, S. T.
Kumar, S. Senthil
Ahmad, Tokeer
Nayaka, G. P.
Mubeen, B.
Sabale, Sandip
Kangralkari, Mrunal V.
Keri, Rangappa S.
CERAMICS INTERNATIONAL, 2024, 50 (19) : 35178 - 35192
[28] Anatomy of flash sintering in yttria-stabilized zirconia solid-state electrolyte: High temporal resolution energy-dispersive X-ray diffraction using a 200 keV synchrotron probe
Savkliyildiz, Ilyas
Degnah, Ahmed
Bicer, Hulya
Salur, Emin
Tsakalakos, Thomas
Akdogan, Enver Koray
JOURNAL OF MATERIALS RESEARCH, 2023, 38 (06) : 1583 - 1592
[29] Anatomy of flash sintering in yttria-stabilized zirconia solid-state electrolyte: High temporal resolution energy-dispersive X-ray diffraction using a 200 keV synchrotron probe
İlyas Şavklıyıldız
Ahmed Degnah
Hülya Biçer
Emin Salur
Thomas Tsakalakos
Enver Koray Akdoğan
Journal of Materials Research, 2023, 38 : 1583 - 1592

← 1 2 3 →