| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7899639 | Journal of Non-Crystalline Solids | 2018 | 7 Pages |
Abstract
Glass samples of cordierite composition Mg2Al4Si5O18, increasingly doped with TiO2 as nucleating agent, were ceramized up to 1300â¯Â°C and analyzed to highlight differences in their crystalline evolution. Employed analytical methods included HT-XRD, DSC and Raman spectroscopy. Glass-ceramics displayed a gradual transition to effective bulk crystallization with increasing TiO2-doping, manifested by earlier and sharper formation of MgO-Al2O3-SiO2 solid solutions of high-quartz structure. The further phase transformation into indialite equally appeared to be influenced by TiO2-content and to be closely related to the compositional and structural evolution of the seed formers, Mg-Al-titanate and rutile. Furthermore, the indialite-cordierite ordering process was investigated by computation of the ordering index at various temperatures from XRD and Raman, again revealing marked differences between TiO2-free and TiO2-bearing compositions.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
A. Zandona, B. Rüdinger, O. Hochrein, J. Deubener,