Phase separation of CaO center dot Al2O3 center dot SiO2 glasses induced by electric field

Citation
W. Liu et al., Phase separation of CaO center dot Al2O3 center dot SiO2 glasses induced by electric field, J MATER SCI, 34(14), 1999, pp. 3455-3459
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF MATERIALS SCIENCE
ISSN journal
00222461 → ACNP
Volume
34
Issue
14
Year of publication
1999
Pages
3455 - 3459
Database
ISI
SICI code
0022-2461(19990715)34:14<3455:PSOCCD>2.0.ZU;2-G
Abstract
By means of S-4200 SEM, phase separation of CaO-Al2O3-SiO2 glasses upon app lication of an electric field is investigated. The experimental results sho w that externally applied electric field promotes the phase separation of t he glass, and it leads to a different size of the droplet phase. In the vic inity of the anode of the glass, the smaller droplet phase is induced compa red with the cathode of the glass. The accelerating phase separation of the glass in the presence of an electric field is due to the decrease in the f ree energy forming a critical nucleus size. The different size of the dropl et phase of the cathode is due to the increase in the driving force of nucl eation and decrease in the viscosity of the glass compared with that of the anode of the specimen. (C) 1999 Kluwer Academic Publishers.