Synthesis, characterization and densification of Samaria Doped Ceria (SDC) ultra-fine powders

Vincenzo Esposito, Huu Luong Bac, Marco Fronzi, Enrico Traversa

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

Nanometric Samaria 20% mol Doped Ceria (SDC20) powders were synthesized by a co-precipitation method. Nano-sized SDC20 powders (crystal size ∼ 15 nm) were obtained by calcination at 600°C. The powders were formed by uniaxial pressure and then sintered. Sintering procedures were led both conventionally, at 1500°C for different sintering times (1, 5, and 10 h), and by fast firing process at different temperatures (1200, 1300, 1400, 1500, and 1600°C for ∼ 0.1 h). Different microstructures were obtained from the different thermal treatments. Electrochemical impedance spectroscopy (EIS) was used to determine total conductivity and to separate bulk and grain boundary impedance contributions. As expected, densification and electrical properties of the conventionally sintered samples showed to be mainly dependent on the average grain size. On the other hand, for the fast fired samples, lattice diffusion mechanism mainly controlled the densification, boundary arrangement and the resulting microstructures at various temperatures. copyright The Electrochemical Society.

本文言語English
ホスト出版物のタイトルSolid State Ionic Devices IV
出版社Electrochemical Society Inc.
ページ35-50
ページ数16
7
ISBN(印刷版)1566774942, 9781566774949
DOI
出版ステータスPublished - 2006
外部発表はい
イベント4th International Symposium on Solid-State Ionic Devices - 208th Meeting of the Electrochemical Society - Los Angeles, CA, United States
継続期間: 2005 10月 162005 10月 21

出版物シリーズ

名前ECS Transactions
番号7
1
ISSN(印刷版)1938-5862
ISSN(電子版)1938-6737

Conference

Conference4th International Symposium on Solid-State Ionic Devices - 208th Meeting of the Electrochemical Society
国/地域United States
CityLos Angeles, CA
Period05/10/1605/10/21

ASJC Scopus subject areas

  • 工学(全般)

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