5 Werkstofftechnik
Filtern
Dokumenttyp
- Vortrag (1)
- Posterpräsentation (1)
Referierte Publikation
- nein (2) (entfernen)
Schlagworte
- Crystallization (2) (entfernen)
Organisationseinheit der BAM
- 5 Werkstofftechnik (2)
- 5.6 Glas (2)
Eingeladener Vortrag
- nein (1)
Overview about the surface initiated microstructure formation in glass surfaces. Samples which are exposed to a temperature treatment, can develop a crystalline microstructure above Tg at the surface. These separated crystals can be preferably oriented towards the surface of the sample. First experiments about the origin of these orientation phenomenon as well as the potentially causing mechanisms are presented and discussed within the presentation.
Up to now, the mechanisms of surface nucleation and surface-induced texture formation are far from being understood. Very few observations of crystal orientation were focused on separately growing surface crystals. In conclusion, no systematic studies on initially oriented crystal growth or nucleation from defined active surface nucleation sites exists. Therefore, the main objective of this just is to advance the basic understanding of the mechanisms of surface-induced microstructure formation in glass ceramics. As a first attempt, we focus on reorientation of separately growing surface crystals during their early growth.