Monoclinic - Tetragonal Zirconia quantification of commercial nanopowder mixtures by XRD and DTA

The phase quantification in ceramic nanopowders presents technological interest for studying and design purposes. Especially in zirconia ceramics where the mechanical and transport properties are strongly affected by the crystalline composition. In this work we present the comparison XRD based metho...

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Detalles Bibliográficos
Autores principales:	Gauna, Matías Roberto, Conconi, María Susana, Gómez, Sofía, Suárez, Gustavo, Aglietti, Esteban Fausto, Rendtorff Birrer, Nicolás Maximiliano
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2015
Materias:	Ingeniería Química Zirconia Nanopowders XRD DTA
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/104186 http://hdl.handle.net/11336/49093 http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=73
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-104186
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ingeniería Química Zirconia Nanopowders XRD DTA
spellingShingle	Ingeniería Química Zirconia Nanopowders XRD DTA Gauna, Matías Roberto Conconi, María Susana Gómez, Sofía Suárez, Gustavo Aglietti, Esteban Fausto Rendtorff Birrer, Nicolás Maximiliano Monoclinic - Tetragonal Zirconia quantification of commercial nanopowder mixtures by XRD and DTA
topic_facet	Ingeniería Química Zirconia Nanopowders XRD DTA
description	The phase quantification in ceramic nanopowders presents technological interest for studying and design purposes. Especially in zirconia ceramics where the mechanical and transport properties are strongly affected by the crystalline composition. In this work we present the comparison XRD based methods and differential thermal analysis methods for phase characterization and specially quantification. A complete series of commercial nanopowders mixtures (D50 ≈ 0.1 um) of monoclinic zirconia (m) and partially stabilized zirconia (t: 3 % yttrium oxide) was studied. X ray diffraction (XRD) was performed and the relation m:t was quantified by the so called Garvie-Nicholson (G-N), Toraya and Rietveld method. A complete reversible DTA analysis was carried out to the same mixtures. Both m-t and t-m martensitic thermal transformations were observed and pondered for the m-ZrO2 containing samples. The graphical integration was performed and employed for the construction of a calibration curve in the studied composition range. The results were compared, the Toraya method presented equivalent results in comparison with the Rietveld method. The G-N method presented appreciable differences (≈ 10 %). To assume a direct proportion of the m-ZrO2 content with the peak area resulted in important errors but if a simple calibration curve is constructed, the DTA method presents accurate quantification with results comparable to the best XRD based quantification.
format	Articulo Articulo
author	Gauna, Matías Roberto Conconi, María Susana Gómez, Sofía Suárez, Gustavo Aglietti, Esteban Fausto Rendtorff Birrer, Nicolás Maximiliano
author_facet	Gauna, Matías Roberto Conconi, María Susana Gómez, Sofía Suárez, Gustavo Aglietti, Esteban Fausto Rendtorff Birrer, Nicolás Maximiliano
author_sort	Gauna, Matías Roberto
title	Monoclinic - Tetragonal Zirconia quantification of commercial nanopowder mixtures by XRD and DTA
title_short	Monoclinic - Tetragonal Zirconia quantification of commercial nanopowder mixtures by XRD and DTA
title_full	Monoclinic - Tetragonal Zirconia quantification of commercial nanopowder mixtures by XRD and DTA
title_fullStr	Monoclinic - Tetragonal Zirconia quantification of commercial nanopowder mixtures by XRD and DTA
title_full_unstemmed	Monoclinic - Tetragonal Zirconia quantification of commercial nanopowder mixtures by XRD and DTA
title_sort	monoclinic - tetragonal zirconia quantification of commercial nanopowder mixtures by xrd and dta
publishDate	2015
url	http://sedici.unlp.edu.ar/handle/10915/104186 http://hdl.handle.net/11336/49093 http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=73
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bdutipo_str	Repositorios
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Monoclinic - Tetragonal Zirconia quantification of commercial nanopowder mixtures by XRD and DTA

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