The influence of the melting conditions on the basicity of glasses

In some previous works a basicity scale for oxides has been proposed, with O 2− as an origin (per cent of basicity pB (O 2) = 100%), as well as an equation allowing the calculation of pB on the basis of ionisation potential, taking into account the coordination number and the oxidation state of the...

Full description

Saved in:
Bibliographic Details
Published in:Journal of non-crystalline solids 1985-01, Vol.71 (1), p.69-75
Main Authors: Baltǎ, P., Spurcaciu, C., Radu, D., Dumitrescu, O.
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In some previous works a basicity scale for oxides has been proposed, with O 2− as an origin (per cent of basicity pB (O 2) = 100%), as well as an equation allowing the calculation of pB on the basis of ionisation potential, taking into account the coordination number and the oxidation state of the atoms and considering that the basicity is related to electron donating power of oxygen atoms. The present work deals with the possible variation of the basicity of oxidic compounds with melting temperature and duration. In the case of SiO 2 an attempt was made to estimate the influence of structure disordering induced by melting upon the basicity value. For binary silicate glasses, the influence of melting time and temperature on pB values was considered through the change induced into the polymer distribution, using the available data concerning the alteration of equilibrium constant with melting condition. Some of the above mentioned results are compared with the experimentally obtained data, by means of UV and IR spectroscopy.
ISSN:0022-3093
1873-4812
DOI:10.1016/0022-3093(85)90275-3