Structure of sodium borosilicate glasses in its relation to the phenomenon of opalescence Communication 3. Comparison of the results of investigatons on sodium borosilicate glasses and on porous products obtained from them by leaching

Autor: S. P. Zhdanov, E. A. Porai-Koshits, D. I. Levin
Rok vydání: 1955
Předmět:
Zdroj: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 4:353-358
ISSN: 1573-9171
0568-5230
DOI: 10.1007/bf01191916
Popis: 1. It has been established that sodium borosilicate glasses that are capable of becoming opalescent and the porous glasses obtained from them by leaching have a common structure. 2. The light scattering and opalescence of sodium borosilicate glasses result from their differentiation into silica and borate components, and it is this differentiation that makes it possible to obtain porous products by leaching. 3. The variation in the intensity of the scattering of light by sodium borosilicate glasses is associated with the variation in the degree of disperson of the second component, i.e. the borate component that is dispersed through the skeleton. 4. The dimensions of the chemically homogeneous region in sodium borosilicate glasses have been estimated by a study of the structure of the corresponding porous glasses. 5. The presence of local chemical order (submicroheterogeneous structure) is characteristic not only for sodium borosilicate glasses, but also for most complex glasses.
Databáze: OpenAIRE
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