Degradation of 5 mol% yttria–zirconia by intergranular cracking in water at 300 °C

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Degradation of 5 mol% yttria–zirconia by intergranular cracking in water at 300 °C. / Vandermeulen, Willy; Bosch, Rik-Wouter; Leenaers, Ann; Van Renterghem, Wouter; Snijkers, F.; Chaouadi, Rachid (Peer reviewer).

In: Journal of Material Science, Vol. 45, No. 20, 20.05.2010, p. 5502-5511.

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@article{e084b2e2a9fd4f4f89383ba440990ede,
title = "Degradation of 5 mol% yttria–zirconia by intergranular cracking in water at 300 °C",
abstract = "Zirconia–5 mol% yttria has been used successfully for pH sensing in high temperature water (C300 °C). However, this material, which consists of the cubic phase with 2–8 vol.% intergranular tetragonal precipitates, is not always stable in this environment and some batches were found to be fragmented by cracking within a few days. To study this effect, different samples of the material were structurally characterised and exposed to 300 °C water. It was found that the susceptibility to cracking increased with the volume content of the intergranular precipitates. The cracking mechanism was explained by the stress-induced grain boundary cracking of the cubic phase, the stress being due to the water-induced martensitic transformation of the tetragonal precipitates. A model has been proposed which allows to interpret the dependence of crack formation propensity on the size of the tetragonal precipitates.",
keywords = "YSZ reference electrode, ceramic, intergranular cracking, PWR",
author = "Willy Vandermeulen and Rik-Wouter Bosch and Ann Leenaers and {Van Renterghem}, Wouter and F. Snijkers and Rachid Chaouadi",
note = "Score = 10",
year = "2010",
month = may,
day = "20",
doi = "10.1007/s10853-010-4608-z",
language = "English",
volume = "45",
pages = "5502--5511",
journal = "Journal of Material Science",
issn = "0022-2461",
publisher = "Springer",
number = "20",

}

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TY - JOUR

T1 - Degradation of 5 mol% yttria–zirconia by intergranular cracking in water at 300 °C

AU - Vandermeulen, Willy

AU - Bosch, Rik-Wouter

AU - Leenaers, Ann

AU - Van Renterghem, Wouter

AU - Snijkers, F.

A2 - Chaouadi, Rachid

N1 - Score = 10

PY - 2010/5/20

Y1 - 2010/5/20

N2 - Zirconia–5 mol% yttria has been used successfully for pH sensing in high temperature water (C300 °C). However, this material, which consists of the cubic phase with 2–8 vol.% intergranular tetragonal precipitates, is not always stable in this environment and some batches were found to be fragmented by cracking within a few days. To study this effect, different samples of the material were structurally characterised and exposed to 300 °C water. It was found that the susceptibility to cracking increased with the volume content of the intergranular precipitates. The cracking mechanism was explained by the stress-induced grain boundary cracking of the cubic phase, the stress being due to the water-induced martensitic transformation of the tetragonal precipitates. A model has been proposed which allows to interpret the dependence of crack formation propensity on the size of the tetragonal precipitates.

AB - Zirconia–5 mol% yttria has been used successfully for pH sensing in high temperature water (C300 °C). However, this material, which consists of the cubic phase with 2–8 vol.% intergranular tetragonal precipitates, is not always stable in this environment and some batches were found to be fragmented by cracking within a few days. To study this effect, different samples of the material were structurally characterised and exposed to 300 °C water. It was found that the susceptibility to cracking increased with the volume content of the intergranular precipitates. The cracking mechanism was explained by the stress-induced grain boundary cracking of the cubic phase, the stress being due to the water-induced martensitic transformation of the tetragonal precipitates. A model has been proposed which allows to interpret the dependence of crack formation propensity on the size of the tetragonal precipitates.

KW - YSZ reference electrode

KW - ceramic

KW - intergranular cracking

KW - PWR

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_110487

UR - http://knowledgecentre.sckcen.be/so2/bibref/7585

U2 - 10.1007/s10853-010-4608-z

DO - 10.1007/s10853-010-4608-z

M3 - Article

VL - 45

SP - 5502

EP - 5511

JO - Journal of Material Science

JF - Journal of Material Science

SN - 0022-2461

IS - 20

ER -

ID: 354523