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Title:
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Influence of hydrothermal degradation on wear behaviour of zirconia tetragonal polycristals doped with 3% molar of yttria
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Author:
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Kiran Chitapalli, Ravi; Valle Chiro, Jorge Antonio; Mestra Rodríguez, Álvaro Miguel; Anglada Gomila, Marcos Juan
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica; Universitat Politècnica de Catalunya. CIEFMA - Centre d'Integritat Estructural, Micromecànica i Fiabilitat dels Materials |
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Abstract:
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The goal of this work is to analyse the influence of hydrothermal degradation on wear behaviour on samples of tetragonal polycrystals doped with 3% molar of yttria in air under dry sliding conditions on samples artificially aged at 0, 10 and 60 hours in autoclave at 131°C. The samples were prepared by conventional compaction and sintering at 1450°C. The study was carried out by performing scratch tests and ball on disc experiments against 3Y-TZP balls. At low
loads the damage was not distinctive, but under high loads the damage mechanisms were different suggesting a clear effect of degradation after long ageing times. On the contrary, in samples degraded during 60 hours the wear rates in both experiments were initially higher than on non-aged specimens and decreased with increasing load and/or sliding distance. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria dels materials::Degradació de materials
-3Y-TZP materials
-Condensed matter -- Thermal properties
-Hydrotermal degradation
-Zirconia doped with yttria
-Zircó |
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Rights:
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Document type:
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Article - Published version
Article |
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