High expansion, lithium corrosion resistant sealing glasses
AssigneeThe Unites States of America as represetned by the United States Department of Energy
InventorsRichard K. Brow, Randall D. Watkins
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Abstract
Glass compositions containing CaO, Al.sub.2 O.sub.3, B.sub.2 O.sub.3, SrO and BaO in various combinations of mole % are provided. These compositions are capable of forming stable glass-to-metal seals with pin materials of 446 Stainless Steel and Alloy-52 rather than molybdenum, for use in harsh chemical environments, specifically in lithium batteries.
Claims9
A glass-to-metal seal, suitable for use in ambient temperature lithium batteries, consisting essentially of:
- (a) a metal selected from the group consisting of Alloy-52 and 446 SS, in contact with
- (b) a glass consisting essentially of, in mole %:
- RO about 40-60
- B.sub.2 O.sub.3 about 30-50
- Al.sub.2 O.sub.3 about 10-25
- where RO may be BaO, SrO, or CaO, or any combination of the three.
A glass-to-metal seal, suitable for use in ambient temperature lithium batteries, consisting essentially of:
- (a) Alloy-52, in contact with
- (b) a glass consisting essentially of, in mole %:
- CaO about 30
- BaO about 20
- B.sub.2 O.sub.3 about 40
- Al.sub.2 O .sub.3 about 10.
A glass-to-metal seal, suitable for use in ambient temperature lithium batteries, consisting essentially of:
- (a) Alloy-52, in contact with
- (b) a glass consisting essentially of, in mole %:
- CaO about 40
- BaO about 10
- B.sub.2 O.sub.3 about 40
- Al.sub.2 O.sub.3 about 10.
A glass-to-metal seal, suitable for use in ambient temperature lithium batteries consisting essentially of:
- (a) 446 Stainless Steel, in contact with
- (b) a glass consisting essentially of, in mole %:
- BaO about 50
- B.sub.2 O.sub.3 about 40
- Al.sub.2 O.sub.3 about 10.
A glass-to-metal seal, suitable for use in ambient temperature lithium batteries, consisting essentially of:
- (a) Alloy-52, in contact with
- (b) a glass consisting essentially of, in mole%:
- BaO about 40
- B.sub.2 O.sub.3 about 40
- Al.sub.2 O.sub.3 a bout 20.
A glass-to-metal seal, suitable for use in ambient temperature lithium batteries, consisting essentially of:
- (a) Alloy-52, in contact with
- (b) a glass consisting essentially of, in mole %:
- SrO about 50
- B.sub.2 O.sub.3 about 40
- Al.sub.2 O.sub.3 a bout 10.
A glass-to-metal seal, suitable for use in ambient temperature lithium batteries, consisting essentially of:
- (a) Alloy-52, in contact with
- (b) a glass consisting essentially of, in mole %:
- SrO about 45
- B.sub.2 O.sub.3 about 40
- Al.sub.2 O.sub.3 about 15.
A glass-to-meal seal, suitable for use in ambient temperature lithium batteries, consisting essentially of:
- (a) Alloy-52, in contact with
- (b) a glass consisting essentially of, in mole%:
- SrO about 40
- B.sub.2 O.sub.3 about 50
- Al.sub.2 O.sub.3 about 10.
A glass-to-metal seal, suitable for use in ambient temperature lithium batteries, consisting essentially of:
- (a) Alloy-52, in contact with
- (b) a glass consisting essentially of, in mole %:
- CaO about 50
- B.sub.2 O.sub.3 about 30
- Al.sub.2 O.sub.3 about 20.
Dependencies are inferred from the claim text.