Effect of sintering process on the microstructures of Bi2O3-doped yttria stabilized zirconia

被引：19

作者：

Yeh, T. H. ^{[1
]}

Kusuma, G. E. ^{[1
]}

Suresh, M. B. ^{[1
]}

Chou, C. C. ^{[1
]}

机构：

[1] Natl Taiwan Univ Sci & Technol, Dept Mech Engn, Adv Ceram Lab, Taipei 10672, Taiwan

来源：

MATERIALS RESEARCH BULLETIN | 2010年 / 45卷 / 03期

关键词：

Ceramics; Oxides; Electron microscopy; X-ray diffraction; Crystal structure; Diffusion; Microstructure; MICROWAVE; ELECTROLYTE; CERAMICS;

D O I：

10.1016/j.materresbull.2009.12.014

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Variations of microstructures in Bi2O3-doped yttria stabilized zirconia (YSZ) with conventional furnace and microwave sintering were investigated in this work. The results demonstrated that a small amount of addition of Bi2O3 was effective in reducing the sintering temperature of YSZ from 1500 degrees C to 1200 degrees C and promoting the densification rate of the ceramics. It is interesting that microwave sintering is found to suppress the evaporation rate of Bi2O3 and formation of the monoclinic-ZrO2 or other amorphous phases. Compared to conventional furnace sintering, significant improvement in density of Bi2O3-doped YSZ at lower sintering temperatures with microwave sintering was observed. Rapid heating rate and short sintering time for restricting serious segregation at grain boundary were observed as well. Employing microwave sintering at the same sintered condition, the density of a specimen was evidently increased by 4.59% in comparison to the specimen sintered with a conventional furnace sintering. (C) 2010 Published by Elsevier Ltd.

引用

页码：318 / 323

页数：6

共 8 条

[1] Microwave processing of materials
Clark, DE
Sutton, WH
[J]. ANNUAL REVIEW OF MATERIALS SCIENCE, 1996, 26 : 299 - 331
[2] Direct microwave sintering of yttria-stabilized zirconia at 2•45 GHz
Goldstein, A
Travitzky, N
Singurindy, A
Kravchik, M
[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 1999, 19 (12) : 2067 - 2072
[3] Effect of Bi2O3 additives in Sc stabilized zirconia electrolyte on a stability of crystal phase and electrolyte properties
Hirano, M
Oda, T
Ukai, K
Mizutani, Y
[J]. SOLID STATE IONICS, 2003, 158 (3-4) : 215 - 223
[4] KEIZER K, 1985, CERAM INT, V11, P140
[5] Nightingale SA, 1997, J AM CERAM SOC, V80, P394, DOI 10.1111/j.1151-2916.1997.tb02843.x
[6] Microwave sintering of cubic zirconia
Upadhyaya, DD
Ghosh, A
Gurumurthy, KR
Prasad, R
[J]. CERAMICS INTERNATIONAL, 2001, 27 (04) : 415 - 418
[7] PREPARATION AND ELECTRICAL-PROPERTIES OF A MONOPHASIC ZRO2-Y2O3-BI2O3 SOLID ELECTROLYTE
WINNUBST, AJA
BURGGRAAF, AJ
[J]. MATERIALS RESEARCH BULLETIN, 1984, 19 (05) : 613 - 619
[8] AES STEM GRAIN-BOUNDARY ANALYSIS OF STABILIZED ZIRCONIA CERAMICS
WINNUBST, AJA
KROOT, PJM
BURGGRAAF, AJ
[J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1983, 44 (10) : 955 - 960

← 1 →