HIGH-TEMPERATURE RESISTANT CRYSTALLIZING SOLDER GLASSES

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High-temperature-resistant devitrifying solder glasses that contain 20-45 mol % BaO, 40-60 mol % SiO2, 0-30 mol % ZnO, 0-10 mol % Al2O3, 0-5 mol % BaF2, 0-2 mol % MgO, 0-2 mol % CaO, 0-2 mol % TiO2 and 0-10 mol % B2O3, as well as 0.5-4 mol % M2O3 (M=Y, La or rare earth metals) and/or 0.5-4 mol % ZrO2. The application, of said solder glasses are also disclosed.