FUSIBLE GLASS Russian patent published in 2002 - IPC

FIELD: instrumentation engineering and electronic industry; production of quartz thermosensitive resonators with tuning fork-type piezoelectric elements. SUBSTANCE: noncrystallizable glass is used for junctions with monocrystalline quartz and piezoquartz. Proposed glass includes the following components, mass. %: PbO, 15.5-50.0; ZnO, 8.5-11.0; B₂O₃, 4.5-7.5; TeO₂, 35.5-71.5. Temperature coefficient of linear expansion of glass is 130-135 •10^-7K^-. Soldering temperature ranges from 460 to 480 C. EFFECT: increased temperature coefficient of linear expansion and soldering temperature. 2 tbl