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

作者：Lucie Nguyen; Maitre Alexandre^*; Lejeune Martine; Dossou Yovo Chrystelle; Noguera Remi; Podor Renaud

来源：Ceramics International, 2013, 39(6): 6087-6098.

DOI：10.1016/j.ceramint.2013.01.026

• Sintering
• Electron Microscopy
• Microstructure-final
• SiO2

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.

• 出版日期2013-8
• 单位中国地震局