Glasses containing as little as 5 mol % B2O3 have been made in the ternary system PbO-PbF2-B2O3. Glass transformation and crystallization temperatures, thermal expansion behavior, and electrical conductivity of these glasses have been measured. The lead fluoroborate glasses appear to be anion conductors, with conductivities among the highest ever reported for fluorine-conducting glasses. A model for the structural role of fluorine in these glasses is proposed.
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Gressler et al. (1989) studied this question.
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