IR and RS spectroscopy are used to study the effect of substituting barium and calcium for the sodium cation on the structure of sodium borosilicate glass with the composition 0.25Na2O; O.25B2O3; 0.5SiO2. Analysis of the recorded spectra showed that the substitution of the alkali-metal cations Ba2+ and Ca2+ for the Na+ cation results in breaking of B-O-B and Si-O-Si bridges, as a result of which the fraction of oxygen end atoms increases and the degree of polymerisation of the glass decreases.
Origin
Russian Acad Sciences, Oblast
Journal Title
Glass & Ceramics 68 7-8 Nov/2011 205-208
Sector
Special Glass
Class
S 3736