Approach of phase transformations and densification in nanostructured and (Bi2O3, ZnO,TiO2) doped silica ceramics - Archive ouverte HAL
Article Dans Une Revue Ceramics International Année : 2013

Approach of phase transformations and densification in nanostructured and (Bi2O3, ZnO,TiO2) doped silica ceramics

Alexandre Maitre
  • Fonction : Auteur
  • PersonId : 963786
Martine Lejeune
C. Dossou-Yovo
  • Fonction : Auteur
R. Noguera
  • Fonction : Auteur
Renaud Podor

Résumé

The low temperature sintering of silica is studied under the influence of sintering aids and nanosized powders using X-Ray Diffractometry (XRD) and high-temperature environmental scanning electron microscopy analyses (HT-ESEM). Two particular aids were chosen to conduct this study, [Bi2O3–ZnO]eutectic and titania. We report a lowering of the crystallization temperature when the former compound is introduced in the silica while a raise is observed when the latter is used. Moreover, the amorphous silica crystallization into cristobalite inhibits drastically the kinetics of densification of silica-based materials.

Domaines

Chimie

Dates et versions

hal-00908833 , version 1 (25-11-2013)

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Citer

L. Nguyen, Alexandre Maitre, Martine Lejeune, C. Dossou-Yovo, R. Noguera, et al.. Approach of phase transformations and densification in nanostructured and (Bi2O3, ZnO,TiO2) doped silica ceramics. Ceramics International, 2013, 39, pp.6087-6098. ⟨10.1016/j.ceramint.2013.01.026⟩. ⟨hal-00908833⟩
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