Lead-free tin silicate-phosphate glass and sealing material containing the same
AssigneeNippon Electric Glass Co., Ltd.
InventorToshio Yamanaka
Life of this patent
Estimating the term…
Abstract
A sealing material for electric parts containing a lead-free tin silicate-phosphate glass of 50-100 volume percents and refractory fillers of the balance. The lead free tin silicate-phosphate glass consists essentially of, by molecular percent, 30-80% SnO, 5.5-20% SiO2, and 10-50% P2O5. The glass may contain at least one of glass stabilizing elements, said glass stabilizing elements including 3-25% ZnO, 0-4.9% B2O3, 0-5% Al2O3, 0-10% WO3, 0-10% MoO3, 0-10% Nb2O5, 0-10% TiO2, 0-10% ZrO2, 0-15% R2O (R is Li, Na, K, and/or Cs), 0-5% CuO, 0-5% MnO, 0-10% R′O (R′ is Mg, Ca, Sr and/or Ba), a total content of at least one of the glass stabilizing elements being up to 40%.
Claims17
A tin silicate-phosphate glass which consists essentially of, by molecular percent, 40-60% SnO, 5.5-20% SiO2, 24.1-40% P2O5 and glass stabilizing elements including 3-25% ZnO and other optional glass stabilizing elements including 0-20 B2O3, 0-10% Al2O3, 0-20% WO3, 0-20% MoO3, 0-15% Nb2O5, 0-15% TiO2, 0-15% ZrO2, 0-35% R2O (R is Li, Na, K, and/or Cs), 0-10% CuO, 0-10% MnO, 0-15% R′O (R′ is Mg, Ca, Sr, and/or Ba), a total content of at least one of the glass stabilizing elements being up to 40%.
A tin silicate-phosphate glass which consists essentially of, by molecular percent, 40-60% SnO, 5.5-10% SiO2, 24.1-40% P2O5 and glass stabilizing elements including 3-25% ZnO and other optional glass stabilizing elements including 0-4.9% B2O3, 0-5% Al2O3, 0-10% WO3, 0-10% MoO3, 0-10% Nb2O5, 0-10% TiO2, 0-10% ZrO2, 0-15% R2O (R is Li, Na, K, and/or Cs), 0-5% CuO, 0-5% MnO, 0-10% R′O (R′ is Mg, Ca, Sr, and/or Ba), a total content of at least one of the glass stabilizing elements being up to 40%.
A sealing material consisting essentially of, by volume percent, lead-free tin silicate-phosphate glass of 50-100% and refractory fillers of the balance, said lead-free tin silicate-phosphate glass consisting essentially of, by molecular percent, 40-60% SnO, 5.5-20% SiO2, 24.1-40% P2O5 and glass stabilizing elements including 3-25% ZnO and other optional glass stabilizing elements including 0-20 B2O3, 0-10% Al2O3, 0-20% WO3, 0-20% MoO3, 0-15% Nb2O5, 0-15% TiO2, 0-15% ZrO2, 0-35% R2O (R is Li, Na, K, and/or Cs), 0-10% CuO, 0-10% MnO, 0-15% R′O (R′ is Mg, Ca, Sr, and/or Ba), a total content of at least one of the glass stabilizing elements being up to 40%.
A sealing material consisting essentially of, by volume percent, lead-free tin silicate-phosphate glass of 50-100% and refractory fillers of the balance, said lead-free tin silicate-phosphate glass consisting essentially of, by molecular percent, 40-60% SnO, 5.5-10% SiO2, 24.1-40% P2O5 and glass stabilizing elements including 3-25% ZnO and other optional glass stabilizing elements including 0-4.9% B2O3, 0-5% Al2O3, 0-10% WO3, 0-10% MoO3, 0-10% Nb2O5, 0-10% TiO2, 0-10% ZrO2, 0-15% R2O (R is Li, Na, K, and/or Cs), 0-5% CuO, 0-5% MnO, 0-10% R′O (R′ is Mg, Ca, Sr, and/or Ba), a total content of at least one of the glass stabilizing elements being up to 40%.
Dependencies are inferred from the claim text.