ION-EXCHANGE ON GLASS SUBSTRATES - INFLUENCE OF THE MIXED CATION EFFECT ON CONCENTRATION PROFILES

Authors
ANNEQUINTHEVENIN C LEVY M SAINTANDRE F
Citation
C. Annequinthevenin et al., ION-EXCHANGE ON GLASS SUBSTRATES - INFLUENCE OF THE MIXED CATION EFFECT ON CONCENTRATION PROFILES, Physics and Chemistry of Glasses, 38(5), 1997, pp. 263-268
Citations number
14
Categorie Soggetti
Material Science, Ceramics","Chemistry Physical
Journal title
Physics and Chemistry of Glasses → ACNP
ISSN journal
00319090
Volume
38
Issue
5
Year of publication
1997
Pages
263 - 268
Database
ISI
SICI code
0031-9090(1997)38:5<263:IOGS-I>2.0.ZU;2-T
Abstract
Conductivity measurements have been carried out on silver sodium borat e and silicate glasses revealing a 'mixed cation effect'. This effect is interpreted as being nonlinear variations with glass composition of the self diffusion coefficients of the two mobile cations. An empiric al relationship is deduced from conductivity measurements and is intro duced into ion exchange governing equations which are solved by numeri cal method. Under such conditions, ion exchange simulated profiles sho w significant differences compared to those obtained using composition independent diffusion coefficients.