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Characterisation of conductivity of the (Ce xY 0.2-x) Sc 0.6Zr 3.2O 8-δ (0 ≤ x ≤ 0.2) system and composition Ce 0.04Y 0.02Sc 0.67Zr 3.27O 7.66 as function of time

Research output: Contribution to journalArticle

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Characterisation of conductivity of the (Ce xY 0.2-x) Sc 0.6Zr 3.2O 8-δ (0 ≤ x ≤ 0.2) system and composition Ce 0.04Y 0.02Sc 0.67Zr 3.27O 7.66 as function of time. / De Carvalho, E.; Irvine, J. T.S.

In: Ceramica, Vol. 58, No. 345, 01.01.2012, p. 1-7.

Research output: Contribution to journalArticle

Harvard

De Carvalho, E & Irvine, JTS 2012, 'Characterisation of conductivity of the (Ce xY 0.2-x) Sc 0.6Zr 3.2O 8-δ (0 ≤ x ≤ 0.2) system and composition Ce 0.04Y 0.02Sc 0.67Zr 3.27O 7.66 as function of time', Ceramica, vol. 58, no. 345, pp. 1-7.

APA

De Carvalho, E., & Irvine, J. T. S. (2012). Characterisation of conductivity of the (Ce xY 0.2-x) Sc 0.6Zr 3.2O 8-δ (0 ≤ x ≤ 0.2) system and composition Ce 0.04Y 0.02Sc 0.67Zr 3.27O 7.66 as function of time. Ceramica, 58(345), 1-7.

Vancouver

De Carvalho E, Irvine JTS. Characterisation of conductivity of the (Ce xY 0.2-x) Sc 0.6Zr 3.2O 8-δ (0 ≤ x ≤ 0.2) system and composition Ce 0.04Y 0.02Sc 0.67Zr 3.27O 7.66 as function of time. Ceramica. 2012 Jan 1;58(345):1-7.

Author

De Carvalho, E. ; Irvine, J. T.S. / Characterisation of conductivity of the (Ce xY 0.2-x) Sc 0.6Zr 3.2O 8-δ (0 ≤ x ≤ 0.2) system and composition Ce 0.04Y 0.02Sc 0.67Zr 3.27O 7.66 as function of time. In: Ceramica. 2012 ; Vol. 58, No. 345. pp. 1-7.

Bibtex - Download

@article{6088c002263c40a885b46ebd6f970d32,
title = "Characterisation of conductivity of the (Ce xY 0.2-x) Sc 0.6Zr 3.2O 8-δ (0 ≤ x ≤ 0.2) system and composition Ce 0.04Y 0.02Sc 0.67Zr 3.27O 7.66 as function of time",
abstract = "The conductivity behaviour of the (Ce x Y 0.2x) Sc 0.6Zr 3.2O 8-δ (0 ≤ x ≤ 0.2) system and composition Ce 0.04Y 0.02Sc 0.67Zr 3.270 7.66 have been investigated as function of time using impedance spectroscopy. All samples were prepared by sol-gel and combustion process, sintered at 1500 °C for 12 h and the densities obtained were between 92 and 97{\%}. The electrical measurements were performed at 600 °C. The conductivity values were fairly stable during the first 1800 h of the experiment but after this time the conductivity decreases. For some compositions of the system a semi-circle is detected through time, with capacitance values of an order of magnitude lower, 10 8 F/cm. This semi-circle becomes well defined with time. After the experiment, SEM pictures show that grain boundary is well defined and an increase of pore inside grains, in some cases the surface is damaged showing cracks and fissures indicating microstructure deterioration.",
keywords = "Ac impedance, Ageing, Scandia-zirconia",
author = "{De Carvalho}, E. and Irvine, {J. T.S.}",
year = "2012",
month = "1",
day = "1",
language = "English",
volume = "58",
pages = "1--7",
journal = "Ceramica",
issn = "0366-6913",
publisher = "Associacao Brasileira de Ceramica",
number = "345",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Characterisation of conductivity of the (Ce xY 0.2-x) Sc 0.6Zr 3.2O 8-δ (0 ≤ x ≤ 0.2) system and composition Ce 0.04Y 0.02Sc 0.67Zr 3.27O 7.66 as function of time

AU - De Carvalho, E.

AU - Irvine, J. T.S.

PY - 2012/1/1

Y1 - 2012/1/1

N2 - The conductivity behaviour of the (Ce x Y 0.2x) Sc 0.6Zr 3.2O 8-δ (0 ≤ x ≤ 0.2) system and composition Ce 0.04Y 0.02Sc 0.67Zr 3.270 7.66 have been investigated as function of time using impedance spectroscopy. All samples were prepared by sol-gel and combustion process, sintered at 1500 °C for 12 h and the densities obtained were between 92 and 97%. The electrical measurements were performed at 600 °C. The conductivity values were fairly stable during the first 1800 h of the experiment but after this time the conductivity decreases. For some compositions of the system a semi-circle is detected through time, with capacitance values of an order of magnitude lower, 10 8 F/cm. This semi-circle becomes well defined with time. After the experiment, SEM pictures show that grain boundary is well defined and an increase of pore inside grains, in some cases the surface is damaged showing cracks and fissures indicating microstructure deterioration.

AB - The conductivity behaviour of the (Ce x Y 0.2x) Sc 0.6Zr 3.2O 8-δ (0 ≤ x ≤ 0.2) system and composition Ce 0.04Y 0.02Sc 0.67Zr 3.270 7.66 have been investigated as function of time using impedance spectroscopy. All samples were prepared by sol-gel and combustion process, sintered at 1500 °C for 12 h and the densities obtained were between 92 and 97%. The electrical measurements were performed at 600 °C. The conductivity values were fairly stable during the first 1800 h of the experiment but after this time the conductivity decreases. For some compositions of the system a semi-circle is detected through time, with capacitance values of an order of magnitude lower, 10 8 F/cm. This semi-circle becomes well defined with time. After the experiment, SEM pictures show that grain boundary is well defined and an increase of pore inside grains, in some cases the surface is damaged showing cracks and fissures indicating microstructure deterioration.

KW - Ac impedance

KW - Ageing

KW - Scandia-zirconia

UR - http://www.scopus.com/inward/record.url?scp=84861144300&partnerID=8YFLogxK

M3 - Article

VL - 58

SP - 1

EP - 7

JO - Ceramica

JF - Ceramica

SN - 0366-6913

IS - 345

ER -

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