Synthesis, Characterization and Densification of Samaria Doped Ceria (SDC) ultra-fine Powders

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

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

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.
Original languageEnglish
JournalE C S Transactions
Volume1
Issue number7
Pages (from-to)35-50
ISSN1938-5862
DOIs
Publication statusPublished - 2006
Externally publishedYes
Event208th ECS Meeting - Los Angeles, California, United States
Duration: 16 Oct 200521 Oct 2005

Conference

Conference208th ECS Meeting
CountryUnited States
CityLos Angeles, California
Period16/10/200521/10/2005

Cite this

Esposito, Vincenzo ; Luong, Bac Huu ; Fronzi, Marco ; Traversa, Enrico. / Synthesis, Characterization and Densification of Samaria Doped Ceria (SDC) ultra-fine Powders. In: E C S Transactions. 2006 ; Vol. 1, No. 7. pp. 35-50.
@inproceedings{038a7951e7ac41309975def02b04d662,
title = "Synthesis, Characterization and Densification of Samaria Doped Ceria (SDC) ultra-fine Powders",
abstract = "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.",
author = "Vincenzo Esposito and Luong, {Bac Huu} and Marco Fronzi and Enrico Traversa",
year = "2006",
doi = "10.1149/1.2215541",
language = "English",
volume = "1",
pages = "35--50",
journal = "E C S Transactions",
issn = "1938-5862",
publisher = "The Electrochemical Society",
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}

Synthesis, Characterization and Densification of Samaria Doped Ceria (SDC) ultra-fine Powders. / Esposito, Vincenzo; Luong, Bac Huu ; Fronzi, Marco; Traversa, Enrico.

In: E C S Transactions, Vol. 1, No. 7, 2006, p. 35-50.

Research output: Contribution to journalConference articleResearchpeer-review

TY - GEN

T1 - Synthesis, Characterization and Densification of Samaria Doped Ceria (SDC) ultra-fine Powders

AU - Esposito, Vincenzo

AU - Luong, Bac Huu

AU - Fronzi, Marco

AU - Traversa, Enrico

PY - 2006

Y1 - 2006

N2 - 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.

AB - 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.

U2 - 10.1149/1.2215541

DO - 10.1149/1.2215541

M3 - Conference article

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JO - E C S Transactions

JF - E C S Transactions

SN - 1938-5862

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ER -