Tellurite Glasses

JSGT 1954 V38 T425-T435

Gold is a suitable crucible for the melting of tellurite glasses. A narrow range of lead tellurite glass compositions has been melted in gold and a wider range of barium tellurite compositions. Some results of optical and dielectric measurements of a barium tellurite glass are reported. Some properties of glasses in other binary systems containing TeO₂ are also summarised, detailed results being given for density, expansion coefficient and electrical resistivity of glasses in the system TeO₂–WO₃. Some comments are made on the problems of glass formation, and it is suggested that many radically new compositions remain to be discovered.

J. E. Stanworth