Effect of Al2O3 additions on the thermal expansion behavior of a Li2O-ZnO-SiO2 glass-ceramic

Authors
Demirkesen, E Erkmen, ZE Yildiz, N
Citation
E. Demirkesen et al., Effect of Al2O3 additions on the thermal expansion behavior of a Li2O-ZnO-SiO2 glass-ceramic, J AM CERAM, 82(12), 1999, pp. 3619-3621
Citations number
12
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
ISSN journal
00027820 → ACNP
Volume
82
Issue
12
Year of publication
1999
Pages
3619 - 3621
Database
ISI
SICI code
0002-7820(199912)82:12<3619:EOAAOT>2.0.ZU;2-O
Abstract
The effect of Al2O3 substitution on the thermal expansion behavior of a Li2 O-ZnO-SiO2 glass-ceramic was investigated using differential thermal analys is, X-ray diffractometry, and dilatometry. The coefficient of thermal expan sion of the original Al2O3-free glass-ceramic measured between 20 degrees a nd 900 degrees C decreased from 12.4 x 10(-6)degrees C-1 to 6.3 x 10(-6)deg rees C-1 with Al2O3 substitution for ZnO up to 11 wt%. The results were cor related to the changes in the phase assemblage with Al2O3 addition.