LEAD-FREE LOW-MELTING GLASS

摘要

Provided is a transparent and insulating SiO<SUB>2</SUB>-B<SUB>2</SUB>O<SUB>3</SUB>-ZnO-R<SUB>2</SUB>O-BaO-ZrO<SUB>2</SUB>-CuO lead-free low-melting glass. The lead-free low-melting glass includes a SiO<SUB>2</SUB> of 25-40wt%, a B<SUB>2</SUB>O<SUB>3</SUB> of 35-55wt%, a ZnO of 5-12wt%, a R<SUB>2</SUB>O(Li<SUB>2</SUB>O+Na<SUB>2</SUB>O+K<SUB>2</SUB>O) of 10-18wt%, a BaO of 0.1-3wt%, a ZrO<SUB>2</SUB> of 0.1-7wt%, and a CuO of 0.1-2wt%. Yellowing due to silver reaction can be suppressed and a high visible light transmissivity can be obtained by using the lead-free low-melting glass.