Abstract A glass having a composition which would result by mixing from 20 to 80 weight percent of glass A with 80 to 20 weight percent of glass B and melting the mixture to form a homogeneous glass: ______________________________________ Glass A Glass B
Weight Weight
Percent Percent
______________________________________
SiO 2 1.8-2.2 SiO 2 67-70
B 2 O 3 14-16.5 Li 2 O
14-17
PbO 69-72 Al 2 O 3 4-5.5
ZnO 8.2-9.2 CaO 9-12
BaO 2.7-3.5
______________________________________ said glass having a coefficient of thermal contraction from 15° C. below the annealing point to room temperature of from 106 to 115×10 -7 /°C.
A glass suitable for sealing to ferrites such as manganese-zinc ferrites and consisting essentially of a composition which would result by mixing from 20 to 80 weight percent of glass A with 80 to 20 weight percent of glass B and melting the mixture to form a homogeneous glass: ______________________________________
Glass A Glass B
Weight Weight
Percent Percent
______________________________________
SiO.sub.2
1.8-2.2 SiO.sub.2
67-70
B.sub.2 O.sub.3
14-16.5 Li.sub.2 O
14-17
PbO 69-72 Al.sub.2 O.sub.3
4-5.5
ZnO 8.2-9.2 CaO 9-12
BaO 2.7-3.5
______________________________________ said glass having a coefficient of thermal contraction from 15° C. below the annealing point to room temperature of from 106 to 115×10 -7 /°C.
Claim 2
Dependent Claim
106 words
A glass suitable for sealing to ferrites such as manganese-zinc ferrites and consisting essentially of a composition which would result by mixing from 20 to 80 weight percent of glass A with 80 to 20 weight percent of glass B and melting the mixture to form a homogeneous glass: ______________________________________
Glass A Glass B
Weight Weight
Percent Percent
______________________________________
SiO.sub.2
1.8-2.2 SiO.sub.2
67-70
B.sub.2 O.sub.3
14-16.5 Li.sub.2 O
14-17
PbO 69-72 Al.sub.2 O.sub.3
4-5.5
ZnO 8.2-9.2 CaO 9-12
BaO 2.7-3.5
______________________________________ said glass having a coefficient of thermal contraction from 15° C. below the annealing point to room temperature of from 106 to 115×10 -7 /°C.