Lead-free tin silicate-phosphate glass and sealing material containing the same
First Claim
1. A tin silicate-phosphate glass which consists essentially of, by molecular percent, 30-80% SnO, 5.5-20% SiO2 and 10-50% P2O5.
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Accused Products
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%.
21 Citations
30 Claims
- 1. A tin silicate-phosphate glass which consists essentially of, by molecular percent, 30-80% SnO, 5.5-20% SiO2 and 10-50% P2O5.
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5. A tin silicate-phosphate glass which consists essentially of, by molecular percent, 40-60% SnO, 5.5-10% SiO2 and 24.1-40% P2O5.
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6. A tin silicate-phosphate glass which consists essentially of, by molecular percent, 30-80% SnO, 5.5-20% SiO2, 10-50% P2O5 and at least one of glass stabilizing elements, said glass stabilizing elements including 0-35% ZnO, 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%. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 26, 27, 28)
- O (R′
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23. A tin silicate-phosphate glass which consists essentially of, by molecular percent, 40-60% SnO, 5.5-10% SiO2, 24.1-40% P2O5 and at least one of glass stabilizing elements, said glass stabilizing elements including 3-25% ZnO, 0-4.9% B2O3, 0-5% A2O3, 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%.
- O (R′
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24. A tin silicate-phosphate glass which consists essentially of, by molecular percent, 30-80% SnO, 5.5-20% SiO2 and 10-50% P2O5, said glass has a glass transition point of 250-350°
- C., an excellent flowability at a temperature of 500°
C. or less and a thermal expansion coefficient of 90-150×
10−
7/°
C.
- C., an excellent flowability at a temperature of 500°
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25. 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, 30-80% SnO, 5.5-20% SiO2 and 10-50% P2O5.
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29. 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, 30-80% SnO, 5.5-20% SiO2, 10-50% P2O5 and at least one of glass stabilizing elements, said glass stabilizing elements including 0-35% ZnO, 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%.
- O (R′
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30. 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 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%.
- O (R′
Specification