The Development of Some Very Soft Glasses

JSGT 1949 V33 T167-T175

The regions of glass formation in some binary borate systems have been investigated. Based on these results, more detailed investigations have been made of restricted portions of the BaO–ZnO–B₂O₃, PbO–BaO–B₂O₃ and PbO–ZnO–B₂O₃ systems, the most promising glasses being found in the PbO–ZnO–B₂O₃ system. These glasses have been further improved for use as solder glasses by the addition of small amounts of silica.

A. E. Dale & J. E. Stanworth