Characterization of a rare earth oxide obtained from xenotime mineral

This paper reports on the characterization of a rare earth oxide obtained by hydrometallurgy of the mineral xenotime, an yttrium phosphate containing other rare earths, and comparison with mixtures of rare earth oxides prepared in different ways. The results indicated that hydrometallurgy from xenot...

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Veröffentlicht in:	Materials characterization 2007-01, Vol.58 (1), p.1-7
Hauptverfasser:	Vernilli, Fernando, Camargo Vernilli, Daniela, Ferreira, Bento, Silva, Gilbert
Format:	Artikel
Sprache:	eng
Schlagworte:	COMPARATIVE EVALUATIONS COPRECIPITATION Cross-disciplinary physics: materials science rheology Exact sciences and technology HEAT TREATMENTS HYDROMETALLURGY MATERIALS SCIENCE OXIDES Phase diagrams and microstructures developed by solidification and solid-solid phase transformations Physics Rare earth RARE EARTHS SOLID SOLUTIONS Solidification X-RAY DIFFRACTION X-ray diffractometry XENOTIME YTTRIUM PHOSPHATES
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creator	Vernilli, Fernando Camargo Vernilli, Daniela Ferreira, Bento Silva, Gilbert
description	This paper reports on the characterization of a rare earth oxide obtained by hydrometallurgy of the mineral xenotime, an yttrium phosphate containing other rare earths, and comparison with mixtures of rare earth oxides prepared in different ways. The results indicated that hydrometallurgy from xenotime yielded a solid solution of the rare earth oxides. However, when the pure rare earth oxides were simply mixed physically then heat-treated at 1000 °C, a similar solid solution was not obtained. On the other hand, when the mixtures were prepared using a co-precipitation process, subsequent heat treatment did produce oxide solid solutions similar to that produced by hydrometallurgy of xenotime.
doi_str_mv	10.1016/j.matchar.2006.01.022
format	Article
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subjects	COMPARATIVE EVALUATIONS COPRECIPITATION Cross-disciplinary physics: materials science rheology Exact sciences and technology HEAT TREATMENTS HYDROMETALLURGY MATERIALS SCIENCE OXIDES Phase diagrams and microstructures developed by solidification and solid-solid phase transformations Physics Rare earth RARE EARTHS SOLID SOLUTIONS Solidification X-RAY DIFFRACTION X-ray diffractometry XENOTIME YTTRIUM PHOSPHATES
title	Characterization of a rare earth oxide obtained from xenotime mineral
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