Absence of Dopant Segregation to the Surface of Scandia and Yttria Co-Stabilized Zirconia

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Standard

Absence of Dopant Segregation to the Surface of Scandia and Yttria Co-Stabilized Zirconia. / Vels Hansen, Karin; Mogensen, Mogens Bjerg.

In: Electrochemical and Solid-State Letters, Vol. 15, No. 5, 2012, p. B70-B71.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Harvard

APA

CBE

MLA

Vancouver

Author

Vels Hansen, Karin; Mogensen, Mogens Bjerg / Absence of Dopant Segregation to the Surface of Scandia and Yttria Co-Stabilized Zirconia.

In: Electrochemical and Solid-State Letters, Vol. 15, No. 5, 2012, p. B70-B71.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{f3529d9177ff49fc9be73fd8d9168099,
title = "Absence of Dopant Segregation to the Surface of Scandia and Yttria Co-Stabilized Zirconia",
publisher = "Electrochemical Society, Inc.",
author = "{Vels Hansen}, Karin and Mogensen, {Mogens Bjerg}",
year = "2012",
doi = "10.1149/2.003206esl",
volume = "15",
number = "5",
pages = "B70--B71",
journal = "Electrochemical and Solid-State Letters",
issn = "1099-0062",

}

RIS

TY - JOUR

T1 - Absence of Dopant Segregation to the Surface of Scandia and Yttria Co-Stabilized Zirconia

A1 - Vels Hansen,Karin

A1 - Mogensen,Mogens Bjerg

AU - Vels Hansen,Karin

AU - Mogensen,Mogens Bjerg

PB - Electrochemical Society, Inc.

PY - 2012

Y1 - 2012

N2 - The surface composition of sintered scandia and yttria co-stabilized zirconia was analyzed with x-ray photoelectron spectroscopy. The samples were sintered at 1300°C or 1500°C in flowing dry or moisturized air. It was found that Sc2O3 does not segregate to the surface, unlike the Y2O3 in yttria stabilized zirconia. The probable reason for this is that due to its size the Sc3+ ion fits better in the zirconia lattice than Y3+ does. The difference in surface composition may be the explanation for the observed increased tolerance toward sulfur of Ni-ScYSZ compared to Ni-YSZ cermets.

AB - The surface composition of sintered scandia and yttria co-stabilized zirconia was analyzed with x-ray photoelectron spectroscopy. The samples were sintered at 1300°C or 1500°C in flowing dry or moisturized air. It was found that Sc2O3 does not segregate to the surface, unlike the Y2O3 in yttria stabilized zirconia. The probable reason for this is that due to its size the Sc3+ ion fits better in the zirconia lattice than Y3+ does. The difference in surface composition may be the explanation for the observed increased tolerance toward sulfur of Ni-ScYSZ compared to Ni-YSZ cermets.

KW - TETRAGONAL ZIRCONIA

KW - Fuel-Cells

KW - Conductivity

KW - FLUORITE

KW - IMPURITY

KW - Oxides

KW - SYSTEM

U2 - 10.1149/2.003206esl

DO - 10.1149/2.003206esl

JO - Electrochemical and Solid-State Letters

JF - Electrochemical and Solid-State Letters

SN - 1099-0062

IS - 5

VL - 15

SP - B70-B71

ER -