Titlebook: Borate Glasses; Structure, Propertie L. D. Pye,V. D. Fréchette,N. J. Kreidl (Professor Book 1978 Springer Science+Business Media New York

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NMR Studies of Borates,k has involved the use of B. NMR spectra to identify BO. and BO. units in binary borate glasses and to determine quantitatively the fraction N. of four-coordinated boron in the glasses. Recent work has extended the systems to silicate glasses, ternary systems, oxygen bonding in glasses, and the iden

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Structural Determinations for Sodium Borate Glasses Using B10 and B11 NMR,most exclusively. Aside from its usefulness in the determination of N4, the fraction of four coordinated boron atoms, B-11 NMR has been of limited value in determining the coupling constant (Q.) and the asymmetry parameter (n) found in the glass. This limitation is due primarily to the importance of

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A Gas Probe Analysis of Structural Trends in Boron Glasses,al, electromagnetic “probes”, e.g. X-ray diffraction, electron spin resonance, etc… An alternate method was suggested in 1962 by Doremus (2), viz. a careful analysis of the solution of relatively small diameter gas atoms or molecules in the glass network structure. More recently, the authors (3) hav

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High-Temperature Borate Liquids: Physical Properties of Glass-Forming Compositions,hosilicate composition (33 mole % SiO.) contains a completely depolymerized mixture of SiO.. anions. Any composition between these two extremes must therefore contain a relatively complex mixture of partially polymerized anions. Practice has shown that physical-chemical properties of such mixtures a

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https://doi.org/10.1007/978-3-658-33653-0ctrum (8); and 3) there exists another part of the B-10 NMR experimental spectrum that is sensitive to the distributions of n, but insensitive to distributions of Q. (9). These features of the B-10 NMR spectrum are employed in this work for the study of glasses in the sodium borate system.