Microstructural development of ZnO pellets doped with different vanadium oxides (V2O5 and V2O3)

Francisco Méndez-Martínez, Miriam J. Venegas, Heriberto Pfeiffer Perea

Resultado de la investigación: Contribución a una revistaArtículo

5 Citas (Scopus)

Resumen

This work presents the effect of zinc oxide (ZnO) ceramics, doped with different percentages of vanadium trioxide (V2O3) and vanadium pentoxide (V2O5). Samples were analyzed by X-ray diffraction and scanning electron microscopy. The addition of V2O3 or V2O5 produced changes in the composition and morphology of the pellets. In both cases, different zinc vanadates were detected as secondary phases: α-Zn3 (VO4)2 and Zn4 V2O9. Furthermore, when the vanadium concentration was equal to or higher than 3 wt%, the presence of filaments was detected on the surface of the pellets. These filaments were produced due to vanadium segregation. However, this effect was only observed at the surface of the pellets. On the bulk, the filaments were not observed. Instead, vanadium was found at the interfaces between the ZnO grains and at triple points, as it could be expected.

Idioma originalInglés
Páginas (desde-hasta)564-570
Número de páginas7
PublicaciónInternational Journal of Applied Ceramic Technology
Volumen4
N.º6
DOI
EstadoPublicada - 1 dic 2007

Huella dactilar

Zinc Oxide
Vanadium
vanadium oxides
Zinc oxide
pellets
zinc oxides
Oxides
vanadium
filaments
Vanadates
Zinc
vanadates
X ray diffraction
Scanning electron microscopy
Chemical analysis
zinc
vanadium pentoxide
Filament
ceramics
scanning electron microscopy

Citar esto

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abstract = "This work presents the effect of zinc oxide (ZnO) ceramics, doped with different percentages of vanadium trioxide (V2O3) and vanadium pentoxide (V2O5). Samples were analyzed by X-ray diffraction and scanning electron microscopy. The addition of V2O3 or V2O5 produced changes in the composition and morphology of the pellets. In both cases, different zinc vanadates were detected as secondary phases: α-Zn3 (VO4)2 and Zn4 V2O9. Furthermore, when the vanadium concentration was equal to or higher than 3 wt{\%}, the presence of filaments was detected on the surface of the pellets. These filaments were produced due to vanadium segregation. However, this effect was only observed at the surface of the pellets. On the bulk, the filaments were not observed. Instead, vanadium was found at the interfaces between the ZnO grains and at triple points, as it could be expected.",
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Microstructural development of ZnO pellets doped with different vanadium oxides (V2O5 and V2O3). / Méndez-Martínez, Francisco; Venegas, Miriam J.; Pfeiffer Perea, Heriberto.

En: International Journal of Applied Ceramic Technology, Vol. 4, N.º 6, 01.12.2007, p. 564-570.

Resultado de la investigación: Contribución a una revistaArtículo

TY - JOUR

T1 - Microstructural development of ZnO pellets doped with different vanadium oxides (V2O5 and V2O3)

AU - Méndez-Martínez, Francisco

AU - Venegas, Miriam J.

AU - Pfeiffer Perea, Heriberto

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N2 - This work presents the effect of zinc oxide (ZnO) ceramics, doped with different percentages of vanadium trioxide (V2O3) and vanadium pentoxide (V2O5). Samples were analyzed by X-ray diffraction and scanning electron microscopy. The addition of V2O3 or V2O5 produced changes in the composition and morphology of the pellets. In both cases, different zinc vanadates were detected as secondary phases: α-Zn3 (VO4)2 and Zn4 V2O9. Furthermore, when the vanadium concentration was equal to or higher than 3 wt%, the presence of filaments was detected on the surface of the pellets. These filaments were produced due to vanadium segregation. However, this effect was only observed at the surface of the pellets. On the bulk, the filaments were not observed. Instead, vanadium was found at the interfaces between the ZnO grains and at triple points, as it could be expected.

AB - This work presents the effect of zinc oxide (ZnO) ceramics, doped with different percentages of vanadium trioxide (V2O3) and vanadium pentoxide (V2O5). Samples were analyzed by X-ray diffraction and scanning electron microscopy. The addition of V2O3 or V2O5 produced changes in the composition and morphology of the pellets. In both cases, different zinc vanadates were detected as secondary phases: α-Zn3 (VO4)2 and Zn4 V2O9. Furthermore, when the vanadium concentration was equal to or higher than 3 wt%, the presence of filaments was detected on the surface of the pellets. These filaments were produced due to vanadium segregation. However, this effect was only observed at the surface of the pellets. On the bulk, the filaments were not observed. Instead, vanadium was found at the interfaces between the ZnO grains and at triple points, as it could be expected.

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