Thermal behavior of Mullite–Zirconia–Zircon composites : Influence of Zirconia phase transformation

Mullite–Zirconia–Zircon composites have proved to be suitable for high-temperature structural applications, with good mechanical and fracture properties and good thermal shock resistance. In this paper, the special dilatometric behavior of a series of Mullite–Zirconia–Zircon (3–40 vol.% ZrO₂) compos...

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Autores principales: Rendtorff Birrer, Nicolás Maximiliano, Garrido, Liliana Beatriz, Aglietti, Esteban Fausto
Formato: Articulo
Lenguaje:Inglés
Publicado: 2011
Materias:
Ciencias Exactas
Ceramic materials
Composite materials
Zirconia
Martensitic transformation
Dilatometry
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/132751
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-132751
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Ceramic materials
Composite materials
Zirconia
Martensitic transformation
Dilatometry
spellingShingle Ciencias Exactas
Ceramic materials
Composite materials
Zirconia
Martensitic transformation
Dilatometry
Rendtorff Birrer, Nicolás Maximiliano
Garrido, Liliana Beatriz
Aglietti, Esteban Fausto
Thermal behavior of Mullite–Zirconia–Zircon composites : Influence of Zirconia phase transformation
topic_facet Ciencias Exactas
Ceramic materials
Composite materials
Zirconia
Martensitic transformation
Dilatometry
description Mullite–Zirconia–Zircon composites have proved to be suitable for high-temperature structural applications, with good mechanical and fracture properties and good thermal shock resistance. In this paper, the special dilatometric behavior of a series of Mullite–Zirconia–Zircon (3–40 vol.% ZrO₂) composites is evaluated and compared with that of a pure Zircon material and explained in terms of the high Zirconia linear thermal expansion coefficient (α) and Zirconia martensitic transformation. Linear thermal expansion (α) up to 1273 K is studied and correlated with the phase composition of the composites; a linear correlation was found with the m-ZrO₂ content evaluated with the Rietveld method. Zirconia (m-ZrO₂) dispersed grains containing ceramics material showed a hysteresis in a reversible dilatometric curve (DC). The martensitic transformation temperatures could be evaluated and then compared with the endothermic and exothermic peaks temperatures obtained from the differential thermal analysis (DTA). Furthermore, the hysteresis area was correlated with m-ZrO₂ content, where composites with less than 10 vol.% ZrO₂ did not show this behavior, and from this content up to 40 vol.% of ZrO₂ a linear increase of the hysteresis area was found.
format Articulo
Articulo
author Rendtorff Birrer, Nicolás Maximiliano
Garrido, Liliana Beatriz
Aglietti, Esteban Fausto
author_facet Rendtorff Birrer, Nicolás Maximiliano
Garrido, Liliana Beatriz
Aglietti, Esteban Fausto
author_sort Rendtorff Birrer, Nicolás Maximiliano
title Thermal behavior of Mullite–Zirconia–Zircon composites : Influence of Zirconia phase transformation
title_short Thermal behavior of Mullite–Zirconia–Zircon composites : Influence of Zirconia phase transformation
title_full Thermal behavior of Mullite–Zirconia–Zircon composites : Influence of Zirconia phase transformation
title_fullStr Thermal behavior of Mullite–Zirconia–Zircon composites : Influence of Zirconia phase transformation
title_full_unstemmed Thermal behavior of Mullite–Zirconia–Zircon composites : Influence of Zirconia phase transformation
title_sort thermal behavior of mullite–zirconia–zircon composites : influence of zirconia phase transformation
publishDate 2011
url http://sedici.unlp.edu.ar/handle/10915/132751
work_keys_str_mv AT rendtorffbirrernicolasmaximiliano thermalbehaviorofmullitezirconiazirconcompositesinfluenceofzirconiaphasetransformation
AT garridolilianabeatriz thermalbehaviorofmullitezirconiazirconcompositesinfluenceofzirconiaphasetransformation
AT agliettiestebanfausto thermalbehaviorofmullitezirconiazirconcompositesinfluenceofzirconiaphasetransformation
bdutipo_str Repositorios
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